Read the passage and answer the questions.
I was under the canvas with guns. They smelled clearly of oil and grease. I lay and listened to the rain on the canvas and the clicking of the car over the ralls. There was a little light come through and I lay and looked at the guns. They had their canvas jackets on. I thought they must have been sent ahead from the third army. The bump on my forehead was swollen, and I stopped the bleeding by lying still and letting it coagulate, then picked away the dried blood except over the cut.
In the sentence ‘they had their canvas jackets on the word’ ‘they’ stands for :
(a) guns
(b) soldiers
(c) railway carriages
(d) third army