已知a=(1,1,1),b=(0,2,-1),c=ma+nb+(4,-4,1).若c与a及b都垂直,则m,n的值分别为　　　　.

A 26-year-old male is admitted to an inpatient psychiatric hospital after having been picked up by the local police while walking around the neighborhood at night without shoes in the snow. He appears confused and disoriented. Which of the following is the most immediate nursing action（）

A. Assess and stabilize the client’s medical needs.

B. Assess and stabilize the client’s psychological needs.

C. Attempt to locate the nearest family member to get an accurate history.

D. Arrange a transfer to the nearest medical facility.