Required: a. How must Rebecca treat the income and expenses of the operation if the dog breeding business is held to be a hobby? Note: Leave no cells blank. Enter " 0 " wherever required. b. How would your answer differ if the operation were held to be a business? Required: a. How must Rebecca treat the income and expenses of the operation if the dog breeding business is held to be a hobby? Note: Leave no cells blank. Enter " 0 " wherever required. b. How would your answer differ if the operation were held to be a business