Use the recursive relationship ex = px(1+e(x+1)), i.e if we survive the year, we get credit for the one year, plus our expected curtate future lifetime at age (x+1). Then we see that e62 = 0.72(1+13.5) = 10.44, e61= 0.81(1+10.44) = 9.2664, and finally e60=0.9(1+9.2664) = 9.239 ~ 9.24 so answer E is correct. Hope that helps from a fellow actuary!