Find the Lengths of All the Unknown Members of the Truss

Multiple Choice

Find the lengths of all the unknown members of the truss. Round your answer to one decimal place.
$$A = 30$$

A) $b \approx 22.0 , a \approx 37.6$
B) $b \approx 21.0 , a \approx 36.6$
C) $b \approx 24.0 , a \approx 39.6$
D) $b \approx 36.6 , a \approx 21.0$
E) $b \approx 23.0 , a \approx 38.6$