Self-Employed Client's home has 3 bedrooms all 10x14, Livingroom is 18x24, kitchen is 12x20, and both bathrooms are 6x12

Rent: $2000 per month

Hydro: 100 per month

Gas: 75 per month

Internet: $100 per month

Snow removal and garbage pick-up: $50 per month

Question:

One bedroom is used exclusively for the home office.....

I would like to know what the office in the home deduction is