Assume that for a data field, only the codes 1 or 2 should appear. If a researcher mistakenly inputs any other number (say, 3), an error message is immediately displayed on the screen. This indicates that the software being used for data entry probably has a(n):
A. data input detection system.
B. input error capture mechanism.
C. error edit routine.
D. catch-error template.
E. outlier detection routine.
Answer: C