Given the function focy) = In (4 y). answer the following questions. a. Choose the correct domain of the function f(x.y) = In (4x -y*). a. Find the function's domain. b. Find the function's range. c. Describe the function's level curves. d. Find the boundary of the function's domain. e. Determine if the domain is an open region, a closed region, both, or neither. 1 Decide if the domain is bounded or unbounded. OA All points in the first quadrant O B. All values of x and y except when f(x.y) =y- 4x generate real numbers. OC. All points in the xy-plane except the origin OD. All points in the xy-plane b. Choose the correct range of the function fộx.y) = In (4 +y). OA. All non-negative real numbers OB. All non-negative integers OC. All integers OD. All real numbers c. Choose the correct description of the level curves of foxy) = In (4? +y°) . OA. Straight Lines O B. Circies OC. Elipses OD. The x- and y-axes, when foxy)= 0 d. Does the function's domain have a boundary? Select the correct choice and if necessary, fil in the answer box below to complete OA Yes, at 0 (Type an expression using x and y as the variables.) OB. Yes, at (Type an ordered pair. Use a comma to separate answers as needed.) OC. No e. Choose the correct description of the domain of fox.y) = In (4 •y). OA. Open Region