The start of frame (SOF) bit is being discussed. Technician A says with the J1850 protocol, the SOF bit is pulled from low to high. Technician B says with the CAN 2.0 A protocol, the SOF bit is pulled from high to low. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: C
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