Super-fat pig escapes slaughter

A sow weighing 600 kg grew so much larger than expected that it was kept for its owner to ride on instead of being slaughtered. It's rare for a swine to reach over 500 kg. The swine is two years old, 1 meter tall and 1.5 meters long. It is the first swine that weighs over 500 kg in the village, so the farmer owner didn't send it to the slaughter house but walked it around or rode it in his leisure time.

How old is the swine?

A. One year old

B. Two years old

C. Three years old