【单选题】142 Terms are implied into employment contracts under common law (i.e. by judges), and statute.Which of the following is NOT a term implied by common law?
A.
Employers have a duty to provide a reference
B.
Employers have a duty to provide a safe system of work
C.
Employees have a duty to give honest and faithful service
D.
Employees have a duty to obey lawful and reasonable orders