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If a in R and the equation -3(x-[x]^2)+2...

If a `in` R and the equation `-3(x-[x]^2)+2(x-[x])+a^2=0` (where [x] denotes the greatest integer `le`x) has no integral solution,then all possible values of a lie in the interval :

A

(-2,-1)

B

`(infty,-2)cup(2,infty)`

C

`(-1,0)cup(0,1)`

D

(1,2)

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The correct Answer is:
C
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