If f (x) {{:( ax + 3"," , x le 2), ( a ^...

If `f (x) {{:( ax + 3"," , x le 2), ( a ^(2) x -1 "," , x gt2'):}` then the values of a for which f is continuous for all x are

A

1 and -2

B

1 and 2

C

`-1 and 2 `

D

`-1 and -2`

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Verified by Experts

The correct Answer is:

C

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