Which of the following Function Overloading are wrong? a. Functions declarations that differ only by the return type.
int fun(int x, int y);
void fun(int x, int y);

b. Functions declarations that differ only by the static keyword type.
int fun(int x, int y);
static int fun(int x, int y);

c. Functions declarations with same parameters while some are default.
int fun( int x, int y);
int fun( int x, int y = 10);

d. All functions overloading specified here are good.

c++