See if you can answer this riddle-?

Question

A father and his son were driving when they got into a really bad car accident. They were both in critical condition and rushed to the hospital. Two separate doctors were needed, one for the boy and one for the father. The doctor for the father started right away, but the doctor for the boy said "I can't operate on him, he's my son!"

How is this possible?

Answer 1

This is a really old chestnut. It´s his mum.

Answer 2

i don't get it

Answer 3

The father in the accident was a priest and the doctor was the boy's dad

Answer 4

Was the boy travelling with a priest thus the name "father"

Answer 5

his mother was the doctor