Choose the correct answer:A user wants to borrow a book from her public library.

The library scenario has these mutually exclusive branches afterCheck Book Availability:

Book available here→ directlyBorrow Book.

Borrowed by other user→Reserve Book→ wait untilBook returned(message) →Borrow Book.

Available at other location→Order Book→ wait untilBook arrived(message) →Borrow Book.

So the BPMN needs:

Anexclusive gatewayafter “Check Book Availability” to choose exactly one of three paths.

Message intermediate eventson the “reserved” and “ordered” paths.

Asimple merge(exclusive gateway) before “Borrow Book” since only one branch will be active.

Among the options,Option Bis the one that uses exclusive branching for the three conditions and merges them correctly before “Borrow Book” while modeling the two asynchronous waits with message intermediate events.