It's A. Imagists basically described images instead of telling what they are, so they cared less about grammar and explaining. C is out. So is D and E. This leaves A&B. A is correct instead of B imo.
for the second one litotes says that something is negative even though the sentence is structured to show that its positive. it makes more sense when it says he commented that her house was a palace, but then puts "no palace" this shows that its a litote. I agree witchu. D
