Question

Let g(x)= (x-1)ⁿ/logcos^m(x-1) ;0<x<2 m and n are integers , m does not equal to 0 , n>0 and let p be the left hand derivative of mod(x-1) at x=1. If lim_(x-->1) g(x)=p , then

(a) n= 1, m= 1

(b) n= 1, m= -1

(c) n= 2, m= 2

(d) n> 2, m= n