Your employment contract states that the employer can terminate you on giving three weeks prior notice.

a.

The termination clause will be deemed nul so you do not have a valid employment contract

b.

You can only sue the employer under the Labour Standards Act

c.

You are entitled to receive reasonable notice of termination notwithstanding the wording of the clause

d.

If you signed a written employment contract then this clause is valid

e.

None of the other answers is correct