6 4.Trace of the following C++ code and show what is printed. (10 points) int main () { int x=3,y=9,z=4; what (x,y,z); cout "ln x="x4y="ynz="z; } void what ( int & a, int b, int & c ) { {:[a=a-2;],[b=b+2;],[c++;]:} } Trace below: a) x=3quad y=9quad z=5 b) x=1quad y=9quad z=5 c) x=3quad y=9quad z=4 d) x=1quad y=11quad z=5

4.Trace of the following C++ code and show what is printed. (10 points) int main () \{ int x=3,y=9,z=4; what (x,y,z); \} void what ( int \& a, int b, int \& c ) \{ a=a2b=b+2c++; \} Select answer: Trace below: a) x=3y=9z=5 b) x=1y=9z=5 c) x=3y=9z=4 d) x=1y=11z=5