题目内容
（请给出正确答案）
[主观题]
An identification code read from left to right consists of 2 digits, a dash, 3 digits, a d
ash, and then 4 digits. Each digit can be any number from 0 through 9.
Column A Column B
The number of different identification codes possible
A．if the quantity in Column A is greater
B．if the quantity in Column B is greater
C．if the two quantity are equal
D．if the relationship cannot be determined from the information given
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