A.
problem/cause/solution

B.
problem/solution/solution/recommend ation

C.
problem/solution

Correct answer is B.  problem/solution/solution/recommendation

Explanation:

In this text, first part talks about a problem a company has. In the second part, there are 3 different solutions offered, and in section three, i.e. in conclusion part, there is a solution chosen out of the three previously mentioned as a recommended solution.

pretty sure 1.someone's coat was found in the lobby.