Which of the Following Would End the Employment Relationship by Breach

Which of the following would end the employment relationship by breach, thus possibly giving rise to a claim for damages for wrongful dismissal?

A) The employee is told he will no longer be needed at the completion of the specific job he was hired to do, e.g. paint a bridge.
B) The employee is asked to leave after he refuses to do a reasonable but unpleasant task that is part of his employment, when another more junior employee could have been asked to do it.
C) The employee is asked to leave because a downturn in the economy has resulted in no work for him to do.
D) The employee is asked to leave because he consistently comes to work late as a result of frequent morning traffic jams.
E) The employee is told he will no longer be needed at the end of the period of employment specified in the contract, e.g., one year.