A.質(zhì)子數(shù)為偶數(shù),質(zhì)量數(shù)為奇數(shù) B.質(zhì)子數(shù)為奇數(shù),質(zhì)量數(shù)為奇數(shù) C.質(zhì)子數(shù)為奇數(shù),質(zhì)量數(shù)為偶數(shù) D.質(zhì)子數(shù)為偶數(shù),質(zhì)量數(shù)為偶數(shù)