With reference to Exercise 2.37, state in words what kind of car the customer will choose, if

Question:

With reference to Exercise 2.37, state in words what kind of car the customer will choose, if his choice is given by
(a) The complement of the set of part (a);
(b) The union of the sets of parts (b) And (c);
(c) The intersection of the sets of parts (c) And (d);
(d) The intersection of parts (b) And (c) of this exercise.