A timekeeping clerk fills out data forms for hours worked by 300 employees for a railroad. He found that there was very little oversight over the system so he filled out forms for overtime hours worked, using the names of employees who frequently worked overtime, but entered his own employee number on the forms which were then entered onto the computer. The clerk was issued the extra pay for the overtime.
What is this crime?
A. Hacking
B. Scanning
C. Data diddling
D. Masquerading

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Ithink the answer is b. hope this .