Question 12. - for the function f(x,y) = sin(x+ y)? Į Which of the following is the best description of the contour graph (a) A collection of straight parallel lines. (b) A collection of parabolas,...

Please solve mutliple choice question correctly in 10 minutes and get the thumbs up please show neat and clean work

Extracted text: Question 12. - for the function f(x,y) = sin(x+ y)? Į Which of the following is the best description of the contour graph (a) A collection of straight parallel lines. (b) A collection of parabolas, all pointing the same direction. (c) A collection of concentric circles. (d) A collection of nonintersecting sine curves.