Consider the following problem written in JavaScript pseudocode:

var x = 2; /*Global Variable*/ var y = 3; /*Global Variable*/

function foo(i, j){ i ++; j ++; x += y; } foo(x, y); document.write(x + ", " + y); For each of the following parameter-passing methods, what will be the output of the program? a) Pass-by-value b) Pass-by-value-result c) Pass-by-reference