Question $2(1$ mark$)$

A retail shop$$s system deducts every item purchased from the shop database. The purchasing manager

can determine the stock inventory at any point in time. Which of the following systems makes this

possible?

A$.$ Batch processing.

B$.$ Online Transaction Processing $($OLTP$)$

C$.$ Functional Area Information Systems $($FAIS$)$

D$.$ Service systems.