Eyestrain, in addition to reading small print and staring at a computer screen, can result from a faulty or obsolete corrective lens prescription.


A) Eyestrain, in addition to reading small print or staring at a computer screen, can result from

B) Eyestrain can result from reading small print, from staring at a computer screen, or from using

C) Eyestrain can result not only from reading small print and staring at a computer screen, but also

D) Eyestrain can result from reading small print, staring at a computer screen, as well as

E) Eyestrain may result in reading small print, staring at a computer screen, or in the use of

I stuck between B and C. Please explain me.