hey! curious about how to approach this problem ! please help if anyone knows

Months Repair Since Time Last Type of (hours) Service Repair Service person 3.9 2 electrical Dave Newton 2.0 6 mechanical Dave Newton 3.8 8 electrical Bob Jones 2.8 3 mechanical Dave Newton 2.9 2 electrical Dave Newton 3.9 7 electrical Bob Jones 4.5 9 mechanical Bob Jones 4.8 8 mechanical Bob Jones 4.4 4 electrical Bob Jones 5.5 6 electrical Dave Newton Consider Problem REPAIR. Ignore the variables "months since last service" and "type of repair". Use "service person" to predict "repair time". Consider the following regression: Y = Bo + B,X, +. where X, is equal to 1 if the "service person" is Bob Jones and equal to 0 otherwise. We are interested in the difference in repair time between Dave Newton and Bob Jones (repair time of Dave Newton minus repair time of Bob Jones). Which of the following is correct? A. This difference is equal to Bo B. This difference is equal to Bo + B. C. This difference is equal to - Bo D. This difference is equal to - Bi E. This difference is equal to OD is correct O Als correct OC is correct. O E is correct. O Bis correct