Answer:
Option A
Step-by-step explanation:
The complete question is shown in the attachment.
The sum of angles in a triangle is 180 degrees.
This implies that:
[tex]m\angle A+85+53=180[/tex]
m<A+138=180
m<A=180-138=42
Now we use the sine rule to find AC=b
[tex]\frac{b}{\sin 85}=\frac{85}{\sin 42}[/tex]
This implies that:
[tex]b=\frac{85}{\sin 42}*\sin 85[/tex]
[tex]b=126.5[/tex]
