Chọn đáp án đúng

We finally crossed the hill. We saw a hug splendid flower bed at the foot of it.
A. No sooner had we crossed the hill when we saw a hug splendid flower bed at the foot of it.
B. Not until we crossed the hill did we see a hug splendid flower bed at the foot of it.
C. Scarcely had we crossed the hill than we saw a hug splendid flower bed at the foot of it.
D. It was not until we crossed the hill did we saw a hug splendid flower bed at the foot of it.