What is returned by function two defined below for the call two( 13 ) ?
```
int two ( int n )
{
int ans;
if ( n == 1 )
ans = 0;
else
ans = 1 + two (n / 2);
return ans;
}
```
a. 3
b. 7
c. 0
d. none of the above
a. 3
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