A sold his cow to B for P2,500.00. No date was stipulated for the delivery of the cow. While still in the possession of A, the cow gave birth to a calf.

A) A is entitled to the calf because it was born before his obligation to deliver the cow arises.

B) A is entitled to the calf as B has not paid the price

C) B is entitled to the calf which was born after the perfection of the contract.

D) B, in order to be entitled to the calf, should pay additional cost for the calf to be agreed upon by both parties.