The number of integer solutions for the syetem of inequalities
about x is just 6,then the range of value for real number a is( )
(integersolutions整数解;syetem of inequalities不等式组;the range of value取值范围)
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(integersolutions整数解;syetem of inequalities不等式组;the range of value取值范围)
| A、-2.5<a≤-2 |
| B、-2.5≤a≤-2 |
| C、-5<a≤-4 |
| D、-5≤a≤-4 |