Q3. What is printed by line 12 of main(0 #include 2 double average (double a, double b) a-(a b )/2; return a; 4 7 void main(void) ( 8 double a, b, c; 10 b-7; 11 caverage (a, b); 12 printf("lfIn", a); 13 ) a) 5 b) 6 c) 7 d) None of the above Q4. The function returns what type of variable? int average( double a, float b, int c) a) char b) double c) float d) integer