Technician A says that there are a number of coolant types that each has its own life span. Technician B says that mixing of coolants is generally okay, as all coolants use the same chemical base. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither Anor B

## Step 1<br />Technician A's statement is that there are a number of coolant types that each has its own lifespan. This statement is correct. There are indeed different types of coolants, each with its own lifespan. The lifespan of a coolant depends on several factors such as the type of engine, the operating conditions, and the quality of the coolant.<br /><br />## Step 2<br />Technician B's statement is that mixing of coolants is generally okay, as all coolants use the same chemical base. This statement is incorrect. While it is true that all coolants use the same chemical base, mixing different types of coolants can lead to problems. This is because different coolants have different chemical compositions and properties, and mixing them can result in a coolant that does not perform optimally.