Problems T7T $Q, W$ , And $\Delta U$ For the Process $A \rightarrow B$

Multiple Choice

Problems T7T. 3 through T7T. 7 refer to the following cyclic gas process:

-What are the signs of $Q, W$ , and $\Delta U$ for the process $A \rightarrow B$ ?

A) $0,-,-$
B) $0,+,+$
C) ,,+- 0
D) ,,++ 0
E) ,,-+ 0
F) Other (specify)