Assume you have a program that prints one of the 3 labels A, B, C every time you run it. The distribution of the printed result of each run is P(A)=m, P(B)=m, P(C)=1-2m. Assume in a single trial, you run this program 15 times and observe 3 times of A, 1 time of B and 11 times of C in the printed outputs, according to MLE, what is the estimation of P(A)?