[4 points] Consider the following program written in a language similar to C+. Note that cout < < g statement outputs the value of variableg on the standard output in C+. int g = 2 1/ global var int func(int &a) { a = 1; g = 0; } int main() { func(g); cout g; } a) What will it output if the language uses pass-by-reference method? b) What will it output if the language uses pass-by-value-result method?