<prompt> Methotrexate is an example for which of the following class of drugs?AntibioticAlkylating agentBiologic response modifierFolic acid analogue  <response>: Ans: D Folic acid analogue Ref: The Pharmacological basis of therapeutics bv Goodman Gilman - 12th edition, page no. 1669 -767Explanation:Methotrexate is an anti-metabolite which is a folic acid analogue. Ref: GGClassification of Anti-Cancer DrugsAnti-metabolitesPemetrexed5 FUCapecitabineCytarabineGemcitabine5-aza-cytidineAlkylating agentsCyclophosphamideMelphalanChlorambucilProcarbazineBusullanDacarbazineCisplatinOxaliplatinAntibioticsDoxorubicinDuunorubicinDactinomycinNatural products includeVinblastineVincristinePacliiaxelIrinotecanBiologic response modifiers includeInterferon alfaInterleukin-2Other categoriesTyrosine kinase inhibitors - imatinib, Sunitinib, DasatinibmTOR inhibitors - TemsirolimusProtea some inhibitors - Bortezomib 