[单选题]
A refrigerator removes heat lq7a7i w h;)t0x wgrt)fro4edi k4ec)e s0;lw fm0m the freezing compartment at the rate of 20 kJ and ejects 24 kJ into a room per cycle. How much work i0wdl0f)seik 4 e; mce4s required in each cycle?
A. $4 \; kJ$
B. $20 \; kJ$
C. $24 \; kJ$
D. $44 \; kJ$
