For question 7 what are the correct statements based on the regions

PDF w/o expl 7. CalC6a41b 10 pts possible The graphs of functions Sh x = f(y), I = g(y) O 1. II and III only 02.2 determine regions A1, A2, A3 in a rectangle 2. III only in the first quadrant as shown in 3. II only (4, 3) 4. none are correct A2 5. I and II only A3 A1 O 6. all of them (1, 1) f : - g :--- O 7. I and III only 8. I only Consider the following possible values for the area of these regions: 1. Al = , 9(y) dy - 2, II. A2 = 8 - f(y) dy, III. A3 = [ to(u) - f(it dy. Which are correct without further restrictions on f and g