Under civil service rules, preventive suspension of an employee facing an administrative case, imposed by the proper disciplining authority, shall not exceed:

The correct answer is A. 90 days

Preventive suspension is not a penalty; it keeps the employee from influencing witnesses or tampering with records while the case is investigated. It may be imposed for up to ninety days, after which the employee is reinstated if the case is not yet decided, unless the delay is due to the employee.