Last year ,part of China was struck by floods ,from _effects the pe

Last year ,part of China was struck by floods ,from _effects the pe
Last year ,part of China was struck by floods ,from _effects the pe

Last year ,part of China was struck by floods ,from _effects the pe
Last month,part of Southeast Asia was struck by floods,from_____effects the people are still suffering
A.that B.whose C.those D.what
B.whose effects定语从句 代指前文的floods

啥意思？