To construct an inscribed circle of the ΔABC, how would you find the incenter of ΔABC?
construct the angle bisectors for ∠A and ∠B only
construct the angle bisectors for ∠A and ∠C only
construct the angle bisectors for ∠B and ∠C only
construct the angle bisectors for ∠A, ∠B, and ∠C