Citing the recent increase in earnings by several computer companies, economists feel that a cycle has begun in which personal computer users, especially corporate consumers, are replacing their PC’s with more powerful models.A. a cycle has begun in which personal computer usersB. a cycle for personal computer users has begun in which theyC. there is a cycle beginning for personal computer usersD. it is the beginning of a cycle for personal computer usersE. personal computer users are in the beginning of a cycle when they