What is the power at the output ports of a 90%-10% Tee coupler that has an 80 m W light source and 1 dB of excess loss?

What is the power at the output ports of a 90%-10% Tee coupler that has an 80 m W light source and 1 dB of excess loss?

A.
57.2 m W and 6.3 m W

B.
72 m W and 8 m W

C.
90.6 m W 10.2 m W

D.
60.3 m W 3.2 m W