[单选题]
The apparent brightness . czqt:i bak3zmru7o0gxm97 -of f2van62 8wxj98mi i;eqeueu. a star is $1.0 \times 10^{-12} \; W/m^{2}$ and the peak wavelength is 600 nm. Estimate its distance from us.
A. $0.90 \; pc$
B. $9.0 \; pc$
C. $90 \; pc$
D. $900 \; pc$
