Question $27(2$ points$)$

Which of the following sentences is clear and grammatically correct?

Fred Cohen coined the term computer virus in $1983$ when he demonstrated how

easy it is to write a computer virus, hide it$,$ and then spread it throughout the

computer system.

Demonstrating the ease with which a computer virus could be written, hidden,

and then spread throughout the computer system, the term computer virus was

first applied by Fred Cohen in $1983.$

The term computer virus was first applied by Fred Cohen in $1983,$ he

demonstrated the ease with which a computer virus could be written, hidden,

and then spread throughout the computer system.

The term computer virus was first applied by Fred Cohen in $1983$ Cohen

demonstrated the ease with which a computer virus could, be written, hidden,

and then spread throughout the computer system.