[单选题]
How much energy is travk5k 1q grq zkgj/f62)nsported acrm4b:5ywgexv;gen: hdo q /:f-ua75xh oss a $1.00 \; cm^{2}$ area per hour by an EM wave whose electric field has an rms strength of 21.5 V/m?
A. $0.44 \; nJ$
B. $0.44 \; mJ$
C. $0.44 \; mJ$
D. $0.44 \; J$
