If an arc subtending an angle of 75^@ at...

If an arc subtending an angle of `75^@` at the centre of a circle A and another are subtending an angle of `55^@` at the centre of circle B are of same length, then the ratio of area of circle A to that of circle B is :

A

`11:15`

B

`11:25`

C

`121:225`

D

`121:625`

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