单项选择题

When a repeating timer expires,（）.

A.The When-Timer-Expired trigger resets the timer's iteration parameter.
B.The When-Custom-Item-Event trigger fires and executes the desired actions.
C.It is put in a queue of expired timers for processing on a first-in-first-out basis.
D.The When-Timer-Expired trigger fires instantly regardless of any other processing in the form module.

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