Homer is an employee of Glo Goods, Inc. Homer reports to state officials thaty Glo is illegally shipping unsafe goods to unsuspecting customers. When Glo learns of Homer's report, Glo fires him. Homer sues Glo for wrongful discharge and wins the suit. With respect to the employee-at-will doctrine, this is

Group of answer choices

A) an example of the doctrine

B) an exception based on public policy

C) an exception based on contract law

D) an exception based on tort theory