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