Illusory promises require both parties to perform their contractual obligations

Which of the following is true for employment contracts?

A) To be enforceable, an employment contract must be in writing. B) An oral contract is implicit, while a written contract is explicit. C) They give employees the upper hand in the employment relationship. D) An implicit contract is not specified in a written or verbal contract.

The object-oriented systems development cycle consists of:

A) two phases. B) three phases. C) four phases. D) five phases.