In a code, 'HOUSE' is represented as 8151921. What is the code for 'MOUSE'?

A. 131921

If 'APPLE' is coded as 1613125, what is the code for 'LEMON'?

B. 12141315

If 'COLD' is coded as 31412, what is the code for 'WARM'?

A. 231813