In Paragraph 21, what determined which pass they would take?
A. the amount of food
B. the amount of gasoline
C. the photos to be taken
D. the weight of the plane
E. the height of the pass

Paragraph 21:
Yet how well, after all, could judgment forecast the ultimate result? There were few facts on which we might base a decision. We knew, for example, from Amundsen's report that the highest point of the pass of Axel Heiberg Glacier was 10,500 feet. We should know, in a very few minutes, after June had calculated the gasoline consumption, the weight of the plane. From that we could determine, according to the tables we had worked out and which were then before me, the approximate ceiling we should have. We should know, too, whether or not we should be able to complete the flight, other conditions being favorable.

It is a multiple choice question. I think the answers are B, D, and E. I would just like to check my answers and see if I am right. I would greatly appreciate it! Thank you!

This will be worth 30 points! :-)