The Defendant's Counsel Argued His Client's Termination of the Plaintiff's

The defendant's counsel argued his client's termination of the plaintiff's employment without notice after one incident of incompetence was justified.The court ruled in favour of the defendant.Which of the following would most strongly support the trial judge's decision in these circumstances?

A) The conduct is prejudicial to the employer's business.
B) The employee falsely claimed to possess the requisite skills.
C) The conduct was incompatible with the employer's business.
D) The employee's conduct placed him in a conflict of interest.