The correct option is A Phytophthora infestans
Late blight of potato is caused by the fungus, Phytophthora infestans. Late blight affects the leaves, the tubers and the entire potato plant. Some of the symptoms include dark brown, circular spots which grow to cover large parts of the tuber.
Aspergillus causes black mold on certain fruits and vegetables such as grapes, apricots, onions, and peanuts.
Albugo causes white rust in herbaceous plants and the symptoms include light yellow areas on leaves, with chalky-white, waxy, powdery pustules that finally darken on the underleaf surface and other above ground parts.
Rhizopus causes soft rot of sweet potato.