Transform the spherical system B = (10/r)i + (10cos )j + k into cylindrical form at (5, /2, -2)

Transform the spherical system B = (10/r)i + (10cos )j + k into cylin

1.	Transform the spherical system B = (10/r)i + (10cos )j + k into cylindrical form at (5, /2, -2)
A.	2.467i + j + 1.167k
B.	2.467i j + 1.167k
C.	2.467i j 1.167k
D.	2.467i + j 1.167k
Answer» B. 2.467i j + 1.167k