If f(x)=ax+b and g(x)=cx+d , then f[g(x)...

If f(x)=ax+b and g(x)=cx+d , then f[g(x)]-g[f(x)] is equivalent to a)`f(a)-g(c)` b)`f(c)+g(a)` c)`f(d)+g(b)` d)`f(d)-g(b)`

A

`f(a)-g(c)`

B

`f(c)+g(a)`

C

`f(d)+g(b)`

D

`f(d)-g(b)`

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