The Law Firm of Janes & Jones Personally Served the Defendant

The law firm of Janes & Jones personally served the defendant with a claim,and the defendant failed to respond with a defence within 20 days,as required by provincial law.Which of the following statements describes the position of the defendant?

A) The defendant has effectively admitted the claim.
B) The defendant must be re-served with the claim.
C) The defendant may file a counterclaim.
D) The defendant may now seek arbitration of the claim.