post - test\nwhich of these should be done to protect a/c system parts?\na. drain the coolant.\nb. cover…

post - test\nwhich of these should be done to protect a/c system parts?\na. drain the coolant.\nb. cover open lines and connections with caps.\nc. use an “s” hook to hang parts.\nd. use locking pliers on metal a/c lines.
Answer
Brief Explanations:
Draining coolant is for maintenance, hanging parts with "S" - hook and using locking pliers are not for protection of A/C system parts. Covering open lines and connections with caps prevents debris and contaminants from entering, protecting the system.
Answer:
B. Cover open lines and connections with caps.