A00-280 Question #76: Real Exam Question with Answer & Explanation

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Question

Given two data sets with the following variables:
Data Set HR Variables:
SUBJID
VISIT
HRRATE

Data Set DISP Variables:
SUBJID
VISIT
STATUS

50 data hrates ;
51 merge hr disp ;
52 by subjid ;
53 run ;
NOTE: MERGE statement has more than one data set with repeats of BY values.
NOTE: There were 13 observations read from the data set WORK.HR.
NOTE: There were 6 observations read from the data set WORK.DISP.
NOTE: The data set WORK.HRATES has 13 observations and 5 variables.
Why is the blue note showing in the log?

Options

AThe variable VISIT occurs in both data sets but is not included in the BY statement.
BThere are no observations with matching values for SUBJID in either data set.
CThere are multiple observations with the same value for SUBJID in both data sets.
DOne of the two data sets has multiple observations with the same value for SUBJID.

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