Read the following passage carefully and answer the questions that follow.
We started pitching the highest camp that has ever been made. Everything took five times as long as it would have taken in a place where there was enough air to breathe, but at last we got the, tent up and when we crawled in, it was not too bad. There was only a light wind, and inside it was not too cold for us to take off our gloves. At night most climbers take off their boots, but I prefer to keep them on. Hillary, on the other hand, took his off and laid them next to his sleeping bag.
When they crawled into the tent

Options

A. they took off their gloves because it was not very cold
B. they could not take off their gloves because it was very cold
C. they took off their gloves though it was very cold
D. they did not take off their gloves though it was not cold

Answer

A