What needs to be determined in order to model the connection between components s0 and u3 in more detail?

Choose the correct answer.

Given the following diagram:

What needs to be determined in order to model the connection between components s0 and u3 in more detail?
A . whether component s0 subclasses component u3
B. which parts of each component participate in the connection
C. which parts of each component participate in a reference association
D. whether any part that belongs to component s0 subclasses a pan that belongs to component u3

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Answer: B