[单选题]
A star has absolute lumi4 xhb0nj*z-fp vp *t su(zya3(nosity equal to t5wof1dymxl9j1lwwe7( * du; m hat of the Sun ($1.5 \times 10^{8} \; km$ from the Earth) but is 10 pc away from the Earth. By what factor will it appear dimmer than the Sun?
A. $2 \times 10^{-9}$
B. $2 \times 10^{-11}$
C. $2 \times 10^{-13}$
D. $2 \times 10^{-15}$
