41. If the amplitude of the electric field in a plane electromagnetic wave is 100 V/m, the amplitude of the associated magnetic field is:
A. $6.7 \times 10^{-7}$ T
B. 0.27 T
C. $8.0 \times 10^{7}$ T
D. $3.3 \times 10^{-7}$ T
E. $3.0 \times 10^{10}$ T