Evaluate the following double integral over the region R. [ [ . - JA; R=(xy): 0=x31, 4sys9) R Choose the two integrals that are equivalent to R 19 O A. OB. 40 0 4 19 9 1 Oc. SIX as dy dx OD. 0 4Evaluate the following double integral over the region R by converting it to an iterated integral. [ ] (x + 4y) dA; R= [(X.y): 15x34, 3sys5) R Choose the two integrals that are equivalent to | | (x + 4y) dA. R 4 5 5 4 A. (x + 4y) dx dy DB. [[ (x +4y) dy x 1 3 3 1 5 4 4 5 O c. (x + 4y) dx dy OD. [ ( + 4y ) dy dx 3 1 1 3Evaluate the iterated integral. In 3 In 4 4x + 4y dy dx In 3 In 4 e 4x + 4y dy dx = 1 (Type an exact answer.)