At an outpatient clinic, a client asks the nurse how she can prepare for pregnancy. Which of the following responses by the nurse would be best

A．"Begin an iron supplement of 100 mg daily. "

B．"Supplement your diet with 400 meg of folio acid. "

C．"Avoid raw eggs and cats until conception. "

D．"Receive immunization against toxoplasmosis. "

正常时，apoA-I与apoA-Ⅱ之比为（）

A.1：1

B.2：1

C.3：1

D.4：1

E.5：1