After receiving instruction on the use of a diaphragm for contraception, which statement by the client indicates that they have understood the teaching?

"Once I am fitted for the diaphragm, it will always be the correct size.”.

"I need to leave the diaphragm in for six hours after the last act of intercourse.”.

"This contraceptive can be used during menstruation.”.

"I can leave the diaphragm in for a day or two.”.