The power of a black body at temperature 200K is 544 watt. Its surface area is `(sigma = 5.67 xx 10^(-8) wm^(-2) K^(-4))`

Options

A. `6 xx 10^(-2) m^(2)`
B. `6m^(2)`
C. `6 xx 10^(-6)m^(2)`
D. `6 xx 10^(2) m^(2)`

Answer

B