[单选题]
A refrigerator removes hemn , 8b1bfg5maat from the freezintn2oa; zecqx*piu1 *:g compartment at the rate of 20 kJ and ejects 24 kJ into a room per cycle. How 2 ei*uoz*a;t :q1pxcnmuch work is required in each cycle?
A. $4 \; kJ$
B. $20 \; kJ$
C. $24 \; kJ$
D. $44 \; kJ$
