Homework: Section 15.1 Homework Question 1, 15.1.3 What is the domain of g(x,y)= xy? Select the correct choice below and fill in any answer boxes within your choice. O A. {(x,y); x+ and y (Use a comma to separate answers as needed.) OB. {(x,y): x* (Use a comma to separate answers as needed.) O c. {(x,y); y+ } (Use a comma to separate answers as needed.) D. R