Technician A says that if oil is milky or gray, it may have been contaminated with water or coolant. Technician B says that milky-colored coolant could indicate a blown head gasket. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither Anor B

c. Both A and B<br /><br />Both Technician A and Technician B are correct. Milky or gray oil can indicate contamination with water or coolant, which could be a sign of a problem such as a blown head gasket. A blown head gasket can allow coolant to enter the oil passages, causing the oil to become milky in appearance. Therefore, both technicians are correct in their assessments.