; and (III) coinsurance. (B) Integration with existing telephone number The requirements for a toll-free telephone number under subparagraph (A) may be provided through an existing enrollee toll-free telephone number. (2) Internet website (A) In general Each PDP sponsor offering a prescription drug plan shall have in place an internet website that meets the following requirements: (i) Search function The internet website contains a search function that enables an enrollee to search for a covered part D drug under the plan. (ii) Information The internet website is able to provide the information described in subparagraph (A) of paragraph (1). (iii) Compare function The internet website contains a compare function that enables an enrollee to compare each of the following for a covered part D drug: (I) The out-of-pocket costs for multiple pharmacies, including mail order if available. (II) The out-of-pocket costs for clinically equivalent therapeutic options, including but not limited to generic alternatives. (B) Integration with existing internet website If a PDP sponsor offering a prescription drug plan has in place an internet website for the plan as of the date of the enactment of this subsection, the organization shall integrate the requirements under subparagraph (A) into such website, including through the same log-in process as the existing website. (C) Link to an external internet website A PDP sponsor offering a prescription drug plan may provide the information described subparagraph (A)(ii) for the plan through a link on the plan's internet website to an external internet website. (3) Alert regarding estimates of costs Each PDP sponsor offering a prescription drug plan shall ensure that enrollees of the plan receiving cost information under paragraph (1) or (2) are alerted that the information provided is an estimate and that the actual costs that the enrollee will be responsible for may vary. (4) Exemption The requirements of this subsection shall not apply to a PDP sponsor if the total number of