How many times does Loop 1 iterate on input lists A = (2, 7, 11, 16, 21) and B = (3, 4, 6, 9, 13)? Items are removed from the front of the list and added to the back.

// Loop 1:

While( size(A) > 0 AND size(B) > 0 )

If ( front(A) < front(B) ), then x := remove(B)

If ( front(A) front(B) ), then x := remove(A)

add(x, C)

End-while

A) 7

B) 5

C 8

D) 10