Given the following program, which line(s) cause(s) output to be displayed on the screen? // This program displays my gross wages. 1 2 3 4 5 6 7 8 9 10 11 12 2 13 14 15 16 } // I worked 40 hours and I make $20.00 per hour. #include using namespace std; int main() { int hours; double payRate, grossPay; hours = 40; payRate 20.0; grossPay = hours payRate; cout < < "My gross pay is $" < < grossPay