Given triangle ABC, where ∠C = 90° and ∠ABC = 30°, find angle measures for ∠A and ∠B.
a) ∠A = 30°, ∠B = 60°
b) ∠A = 60°, ∠B = 30°
c) ∠A = 90°, ∠B = 45°
d) ∠A = 45°, ∠B = 90°