A car travels along the four sides of a ...

A car travels along the four sides of a square at speeds v,2v,3v,4v respectively. If u is the average speed of the car in its travel around the square, then which one of the following is correct?

A

`v=2.25v`

B

`u=3v`

C

`v lt u lt 2v`

D

`3v lt u lt 4v`

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