Answer:
I am pretty sure. In my view answer is 4.0
The main drawback of multiuser processing of a database is:
<h3>What is lost-update problem?</h3>
In the area of lost update problem, an update that has been carried on to a data item by a transaction is said to be lost as it is known to be overwritten by the update that has been carried on by another transaction.
Therefore, The main drawback of multiuser processing of a database is:
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<span>A return statement causes a value to be sent from a called method back to the calling method.
</span>When used in computer programming the return statement causes execution to leave the current subroutine and resume at the return address, where the term return address denotes the point <span>in the code immediately after where the subroutine was called.</span>