Whichof the following statements about synchronous and asynchronous 1/0 is NOT true?

An ISR is invoked on completion of I/O in synchronous I/O but not in asynchronous I/O

In both synchronous and asynchronous I/O an ISR (Interrupt Service Routine)is invoked after completian of the I/O

Aprocess making a synchronous I/O call waits until I/O is complete, but a process making an asynchronous I/O call does not wait for completion of the I/O

In the case of synchronous I/O, the process waiting forthe completion of I/O is woken up by the ISR that is invoked after the completion of I/O