I. double calc(int a, float b=12.0);
II. double calc(int a=3, float b=12.0, int c);
III. double calc(int a=3, float b, int c=8);
IV. double calc(int a, float b=12.0, int c=8);


Options

a) I only
b) II only
c) Both I and IV
d) Both II, and III


Answer : c) Both I and IV