Which of the following is an incorrect definition in the algebra of functions? Choose the correct answer below.
O A. (f-g)(x) = g(x) = f(x)
O B. (fog)(x) = f(g(x))
O c. (f.g)(x) = f(x) g(x)
OD. (f+g)(x) = f(x) + g(x)

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