In an electrowetting experiment, if the insulating layer is made thicker, what impact does that have on the change in contact angle upon applying the voltage?

A. the change in contact angle upon applying the voltage will be larger than for a thinner insulating layer

B. there is no change; the contact angle does not depend on the thickness of the insulating layer

C. the change in contact angle upon applying the voltage will be smaller than for a thinner insulating layer

D. this is impossible to predict based on the information given