Unlike cellular phones and personal computers, there is a di

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Unlike cellular phones and personal computers, there is a difficulty on the part of many people to adapt to other modern technologies.

A. Unlike cellular phones and personal computers, there is a difficulty on the part of many people to adapt to other modern technologies.
B. Unlike cellular phones and personal computers, which many people are comfortable using, they have difficulty adapting to other modern technologies.
C. Unlike cellular phones and personal computers, other modern technologies bring out a difficulty for many people to adapt to them.
D. Many people, though comfortable using cellular phones and personal computers, have difficulty adapting to other modern technologies.
E. Many people have a difficulty in adapting to other modern technologies, while they are comfortable using cellular phones and personal computers.

I doubt between options C and D. Can any experts help?