Graph a: Choose the correct answer below. p increases and then decreases p decreases and then increases Graph b: Choose the correct answer below. p increases quickly p decreases quickly Graph c: Choose the correct answer below. p increases, remains constant, and then increases p decreases, remains constant, and then decreases Graph d: Choose the correct answer below. Op decreases sharply and then slowly 4 Q AP Q Q (b) (c) (d)