英语中时间、日期的排列方式on June first,1968/at nine in the morning这样对吗?

英语中时间、日期的排列方式on June first,1968/at nine in the morning这样对吗?She went to the countryside ______.a.in the morning at nine/on June first,1968 b.on June first,1968/in the morning at nine c.at nine in the morning/on June first,1968 d.on June first,1968/at nine in the morning