单项选择题
We use ultraviolet-visible spectrophotometry to determine the content of an unknown substance. When its concentration is c mol/L, the light transmittance is T. When its concentration changes
from c to 0.5 c mol/L, under the same measurement conditions, its light transmittance is ( )
A.T^(3/2)
B.T^2
C.T^(1/2)
D.T^(1/3)