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Consider the following with regard to ec...

Consider the following with regard to eccentricity `(e)` of conic section
`1. e=0` for circle
`2. e=1` for parabola
` 3.` `elt1` for ellipse
Which of the above are correct?

A

`1` and `2` only

B

`2` and `3` only

C

`1` and `3` only

D

`1,2` and `3`

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The correct Answer is:
`D`
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