2019-nCoV (2019新型冠状病毒)comes this winter. It is much more serious than the common flu. What can we do to keep safe?

① Buy medicine as our friends tell us.

② Wash our hands often with soap and water.

③ Cover your mouth and nose with a tissue when you cough.

④ Learn how to put it on, take it off and throw it away correctly when you wear a mask.

⑤ Try to get together with your family and friends.

A、①④⑤

B、②③⑤

C、②③④