_________ it is to go camping in ___________ weather!

A．How great fun; so fine weather

B．What great fun; such fine weather

C．How great fun; such fine weather

D．What a great fun; so fine weather

建设项目的环境影响评价文件自批准之日起超过5年，方决定该项目开工建设的，其环境影响评价文件应当报原审批部门重新审核；原审批单位应当自收到建设项目环境影响评价文件起( )日内，将审核意见书面通知建设单位。

A．15

B．30

C．60

D．10