Absorbance of solution at 100% T is?

0.0

100

0.100

None of these

Absorbance (A) and Transmittance (T) Relationship:
A = -log(T/100)

At 100% Transmittance (T), the equation becomes:
A = -log(100/100) = -log(1) = 0.0

Thus, the absorbance at 100% transmittance is 0.0.