When a vertical indication has reached the maximum signal height which can be displayed or viewed on the CRT of an ultrasonic instrument, the indication is said to have reached its:

When a vertical indication has reached the maximum signal height which

1.	When a vertical indication has reached the maximum signal height which can be displayed or viewed on the CRT of an ultrasonic instrument, the indication is said to have reached its:
A.	Distance-amplitude height
B.	Absorption level
C.	Vertical level
D.	Limit of resolution
Answer» D. Limit of resolution