To determine the correct matching, let us analyze the nature of each relationship and its corresponding communication type:

1. Between cricket captain and team members (A): The relationship among sports teammates is generally informal. However, the captain must lead, set fields, and make strategic decisions, which requires the communication to be firm. Thus, A matches with 1 (Informal and firm).

2. Between judge and lawyers in court (B): A courtroom is a highly structured and formal environment. The judge acts as the ultimate authority, enforcing rules, sustaining or overruling objections, and giving verdicts. Therefore, the communication from the judge is firm. Thus, B matches with 4 (Formal and firm).

3. Between Vice Chancellor and Deputy Registrar (C): This is a formal hierarchical relationship within a university's administration. However, unlike a courtroom, their day-to-day communication involves discussing policies, administrative planning, and collaborative problem-solving, which makes it open-ended. Thus, C matches with 3 (Formal and open-ended).

4. Between peers and coworkers (D): Coworkers operating at the same hierarchical level typically share an informal relationship. Their communication involves brainstorming, sharing ideas, and casual discussions, making it open-ended. Thus, D matches with 2 (Informal and open-ended).

Matching these up, we get A-1, B-4, C-3, D-2.

Therefore, the correct option is B.