Must use the Scheme language to solve the question. Thanks

Write a function drop-parens which takes a list as a parameter and returns a list in which all nested parentheses have been removed. [Scheme has a built-in function flatten which does this same thing. Don't use flatten in your solution to this problem.]

Examples:

 (drop-parens '((a 34)(b 77)(g 6)) ) (a 34 b 77 g 6) (drop-parens '(a b c) ) (a b c) (drop-parens '() ) () (drop-parens '(()((() x)())) ) (x)