1. What is the value of the double integral fodzdy? (A) (B) (C) (D) 1 2. What is the value of the double integral ffy' drdy? (A) 1 (B) (C) (D) 0 3. The region D= {(x,y): 0x1, 0 y 1-r} is a region of (A) type I but not type II (B) type II but not type I (C) both type I and type II (D) neither type I nor type II 4. The double integral ff f(x, y) dydr can be expressed as (A) fofo f(x,y) drdy (B) f f f (C,M)dardy (C) ff. f(x,y) dxdy (D) f(x, y) drdy