If the points A(1, 2), B(2, 4) and C(3, ...

If the points A(1, 2), B(2, 4) and C(3, a) are collinear, what is the length BC ?

A

`sqrt2` unit

B

`sqrt3` unit

C

`sqrt5` unit

D

5 unit

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Verified by Experts

The correct Answer is:

C

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