Sam Was Unemployed and Looking for a Job

 Sam was unemployed and looking for a job. None of his close friends could help him as they themselves were all either unemployed or underemployed. However, Sam got a good job through James, whom he met a few months ago while traveling. From this scenario, it can be inferred that

A) James belongs to Sam's closed network.
B) Sam belongs to James's strong ties.
C) James belongs to Sam's weak ties.
D) Sam belongs to James's communication network.