4. Classify each of the following sets as exactly one of) finite, countably infinite, or un- countable. Very briefly justify your answers. For reference sets, you may use any of the sets explicitly discussed in class or in the textbook. (a.) The set of all bit strings that start with 01 and end with 0: 01wow {0,1}*). (b.) The set of all functions whose domain is {0,1} and whose codomain is {0,1}*. (c.) The set of all functions whose domain is {0, 1}* and whose codomain is {0,1}. Recall that {0,1}* is the set of bitstrings