Answer the following question, with explanation first.
One of the following sentences is nonsensical. Which one is it?\nOptions:\n- Sentence A: "You'd better drive fast when it rains heavily."\n- Sentence B: "You'd better drive slowly when it rains heavily."\n

Sentence A
Speeding up on a rainy day can easily lead to a car accident.

.

Thus, the answer is Sentence A