What is the probable identity of the author

A．saves a lot of time revising a paper
B．feels at ease composing a paper
C．spend less time in composing a paper
D．does not have to write a paper

A．analyse the advantages and disadvantages of computers in education
B．persuade educators to increase computer use in the classrooms
C．describe how computers can be useful to science and business students
D．identify some of the ways computers benefit college students'