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Which of the following terms would likely be considered legal in a written employment contract signed in Alberta? a. A term providing an employee with no vacation for the first two (2) years of employment: b. A non-disclosure clause preventing an employee from disclosing a special production method of their employer. c A term providing an employee with two (2) weeks' worth of notice after working for their employer for 15 years. d. A term preventing an accountant from working for another accounting firm in the province of Alberta for a period of five (5) years