This is For Programming Language Concept. Please answer accurately

1) Suppose that the equal_lists function (page 49 of Sebesta) is called with the lists((A B ) C (D E))and((A B ) C (D E))as the arguments. How many calls ofequal_lists will be performed all together, including the original call and all recur- sive calls?

The following is an example of a Lisp program: Example functionines a Lisp predicate : The following code defines a Lisp predicate function i that takes two lists as arguments and returns True i if the two lists are equal, and NIL (false) otherwise DEFUN equal_lists (lisl lis2) COND (ATOM 1is1) (EQ lisl lis2)) (ATOM lis2) NIL) (equal_lists (CAR lisl) (CAR lis2)) (equal_lists (CDR lis1) (CDR lis2))) (T NIL)