Following Is the Result of Batch Control Totals on Employee

Multiple Choice

Following is the result of batch control totals on employee Social Security numbers in a payroll processing transaction:
$$\begin{array} { c c } \text { Correct } & \begin{array} { c } \text { Values } \\\text { Entered }\end{array} \\\text { Values From } & \text { During } \\\underline { \text { Masterfile } } & \underline { \text { Processing } } \\\hline 487358796 & 487358796 \\534916487 & 534916487 \\498374526 & 498374526 \\514873420 & 514873420 \\534196487 & 534916487 \\678487853 & 678487853 \\\underline { 471230589 } & \underline { 471230589 } \\\underline { \underline { 7719438158 } } & \underline { 3720158158 } \\\hline\end{array}$$
The difference in the control totals is 720,000.Which data entry control would best prevent similar data entry errors in the future?

A) Batch check.
B) Validity check.
C) Check digit.
D) Sequence check.