I had the question: 1994 到 2004 年间，不能自理的老年人怎么样？
2 answer choices were:
I see that 零 can mean 'wither and fall'. In English we can say e.g. 'The numbers have withered.' to mean a fairly drastic reduction in numbers of something.
My question is then: are B and D the same answer using different words, or does 为零 mean 'nearly zero, as zero'?