Which of the following sentences is grammatically correct?
选项：

A:She finds a small door that she opens using a key she discovers on a nearby table.
B:The white rabbit pulls out a pocket watch, exclaims that he is late, pops down a rabbit hole.
C:Alice sits on a river bank, sleepy reading over her sister's shoulder.
D:She catches sight of a white rabbit in a waist coat running near her.