4. Which of the following hypotheses were supported by Milliken's experiment? Circle or highlight your answers, a. If the light has enough intensity electrons will be ejected. b. If the intensity is larger, electrons will have more kinetic energy. c. Electrons will be emitted for low intensity light if we wait long enough. d. The light must have a minimum frequency for electrons to be ejected. e. If light has higher frequency the electrons will have more kinetic energy. f. Below the threshold frequency, no matter how long you wait, no electrons will be emitted