a cylinder bore must be precisely measured. technician a says that the proper measuring tool for this job is…

a cylinder bore must be precisely measured. technician a says that the proper measuring tool for this job is a telescoping gauge. technician b says an inside micrometer should be used. who is right?\n□a only.\n□b only.\n□both a and b.\n□neither a not b.
Answer
Brief Explanations:
Telescoping gauges are used to measure the inside diameter of holes like cylinder bores and are set to the size of the bore and then measured with a micrometer. Inside - micrometers can also be directly used to measure the inside diameter of a cylinder bore precisely. So both technicians are correct.
Answer:
C. Both A and B.