What Does the Following Recursive Method Determine

Multiple Choice

What does the following recursive method determine?
Public boolean question16(int[ ]a, int[ ] b, int j)
{
If (j = = a.length) return false;
Else if (j = = b.length) return True;
Else return question16(a, b, j+1) ;
}

A) returns True if a and b are equal in size, false otherwise
B) returns True if a is larger than b, false otherwise
C) returns True if b is larger than a, false otherwise
D) returns True if a and b have no elements
E) returns the length of array a + length of array b