<prompt> Hypersensitivity pneumonitis isare caused by -Coal workers pneumoconiosisBagassosisSilicosisSarcoidosis  <response>: Bagassosis can lead to hypersensitivity pneumonitis,in which the antigen is thermophilic actinomycetes and the source of antigen is moldy bagasse sugarcane.Other examples for HP include bird fanciers lung,farmers lung,hot tube lung,chemical workers lung,bird fanciers lung,etc. Reference:Harrisons medicine-18th edition,page no::2117. 