please hurry

Chaining method calis - assuming each method below returns an int, what is the equivalent of this code? { int a=methodA(methodB(methodC(methodD(25))));} a. int a= methodD(25): a = methodC(a); a= methodB(a); a = methodA(a); 7 ( int a=methodA() method B(0+methodC0+methodD(25) ) ) 2{ int a=25 method 0 methodC 0 method 0 methodA 0;; d. \{ int a = methodA(a); a = methodB(a); a= methodC(a); a = methodD(25)