[求助]大全814

1.        The recent surge in the number of airplane flights has clogged the nation’s air-traffic control system, to lead to 55 percent more delays at airports, and prompts fears among some officials that safety is being compromised.

(A) to lead to 55 percent more delays at airports, and prompts

(B) leading to 55 percent more delay at airports and prompting

(C) to lead to a 55 percent increase in delay at airports and prompt

(D) to lead to an increase of 55 percent in delays at airports, and prompted（E）

(E) leading to a 55-percent increase in delays at airports and prompting

请问排除B的方法是55 percent more 这种表达不正确呢还是delay应该用复数？

OG185，ETS认为这种表达不如a 55-percent increase in delays ；delay是可数名词。