If A:B=3:4 then what is the vlaue of the...

If `A:B=3:4` then what is the vlaue of the expression `(( 3 A ^(2) + 4 B)/( 3 A - 4 B ^(2)))` ?

A

`(43)/( 55)`

B

`- (43)/( 55)`

C

`(47)/(55)`

D

Cannot be determined

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