Answer:
Technician A.
Explanation:
Technician A is correct because a technician can detect the fault more accurately as compared to the customer.
he will need a microphone, it is a recording device.
A common technique for remembering the order<span> of </span>operations<span> is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction".</span>