A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and flames spreading more quickly.
(A) flames spreading
(B) flame spreads
(C) flames are caused to spread
(D) causing flames to spread
(E) causing spreading of the flames
我当时选了E.然后看它的解释,它对E的解释是Choice E is wordy, unidiomatic, and also awkward in that spreading, although used here as a noun, appears at first to be another present participle that could be modified by more quickly. 我完全看不懂啊它说的什么spreading开始作为现在分词被more quickly修饰.请各位帮帮忙拉.