Three sample questions for the multiple choice exam. In these samples, the last answer is always the correct one. A pair consisting of a term and an environment is typically called a) scope b) monad c) denotational semantics d) closure What is the kind of the following type in F_omega: Int -> lambda X::*. X -> X a) * b) * => * c) * => (* => *) d) it is not well-kinded Which of these is the correct implementation of the "bind" function in the environment monad? a) (define (bind f g) (lambda (env) ((g env) (f env)))) b) (define (bind f g) (lambda (env) ((g (f env))))) c) (define (bind f g) (lambda (env) ((g (f env)) env)))