reading/in/ my/ mother/ cooking/ the/ is/I/ While/ kitchen/ in/ room/books/

• A. 
  While I am reading books in the room, my mother is cooking in my kitchen.
• B. 
  While I am reading books in my kitchen, my mother is cooking in the room.
• C. 
  While I am reading books in my room, my mother is cooking in the kitchen.
• D. 
  While I is reading books in my room, my mother am cooking in the kitchen.