Find a function r(t) that describes the curve where the surfaces intersect.
x^(2)+y^(2)=16;z=2x+3y
A. r(t)=(:4cost,4s\int ,8cost+12s\int :)
B. r(t)=(:4cost,4s\int ,2cost+3s\int :)
C. r(t)=(:16cost,16sint,32cost+48sint:)
D. r(t)=(:2cost,2s\int ,4cost+6s\int :)