Piyush's Mother Is a Teacher

Piyush's mother is a teacher. She also teaches Piyush. How would you treat this white calculating national income and domestic income ?

A) it will be included in the national income, but not in the domestic income.
B) it will be included in the domestic income, but not in the national income.
C) it will be included in domestic income as well as national income.
D) it will neither be included in the domestic income nor in the national income.