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If [x]^(2)- 7 [x] +10 lt 0 and 4 [y] ^(2...

If `[x]^(2)- 7 [x] +10 lt 0 and 4 [y] ^(2) -16[y] + 7 lt 0,` then `[x+y]` cannot be ([.]` denotes greatest integer function):

A

7

B

8

C

9

D

both (b) and (c )

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Verified by Experts

The correct Answer is:
C
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