Assume four possible responses to an error situation by the system: a$)$ Provide contextual information regarding the situation; b$)$ Let the user decide the best course of action without interference; c$)$ Suggest a course of action and ask if it should be executed; and d$)$ Provide contextual information regarding the situation and contact information for a human expert. Which is the preference order for these courses of action by the system according to the human$-$computer collaboration model?

a$,$b$,$c$,$d

d$,$c$,$b$,$a

c$,$d$,$a$,$b

c$,$d$,$b$,$a

d$,$c$,$a$,$b