Help with this CONS Expressions question.

Problem 1 Part A: Show the print expressions resulting from the evaluation of the following cons expressions: (cons 'a (cons 'b (cons 'c 'd))) (cons (cons 'p (cons ' q ' ()) ) '()) Part B: Show the cons expressions that build the following print expressions. You must use only the cons function, not the append function. Also, you cannot quote already completed literal expressions as a substitute for building the expressions starting with individual symbols using cons. '((a. b) (c. d))