Given the function f (x,y) = which ONE of the following statements is CORRECT? x+y? O A. f is only def ined for all values of x> 0 and all y E R; O B. The range of f is (– ∞ , 0 ); O C. 2>x; O D. The point (0,a) is in the domain where a E R; O E. None of the choices in the list.

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A: option (B) is correct see below the calculation

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A: Let's find.

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A: Given:

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