Question 23M.1A.SL.TZ1.30

Light of intensity 500 W m⁻² is incident on concrete and on snow. 300 W m⁻² is reflected from the
concrete and 400 W m⁻² is reflected from the snow.

What is $\frac{\mathrm{albedo} \mathrm{of} \mathrm{concrete}}{\mathrm{albedo} \mathrm{of} \mathrm{snow}}$?

A.  $\frac{1}{2}$

B.  $\frac{3}{4}$

C.  $\frac{4}{3}$

D.  2