Identify the surfaces in spherical coordinates.
S1:rhosinϕ=1,S2:rhocosϕ=2,S3:ϕ=6π
a. S1 : cylinder, S2 : horizontal plane, S3 : cone
b. S1 : horizontal plane, S2 : cylinder, S3 : cone
c. S1: sphere, S2: cylinder, S3 : vertical plane
d. S1: cone, S2: sphere, S3 : vertical plane
e. S1 : sphere, S2 : horizontal plane, S3 : cylinder