Consider the following code snippet:

function mystery1(x){
var result = x + 1;
return result;
}

function mystery2(x, y){
var result = x + y;
return result;
}

function mystery3(x){
x = mystery1(x);
var result = x * x;
return result;
}
What would the following print?

var y = mystery3(11);
println(y);

13

121

144

This would not print anything

121