If Unpolarized Light of Intensity I0 Passes Through an Ideal $I _ { 0 } / 16$

If unpolarized light of intensity I0 passes through an ideal polarizer, what is the intensity of the emerging light?

A) $I _ { 0 } / 16$
B) $I _ { 0 } / 4$
C) $I _ { 0 } / 2$
D) $I _ { 0 }$
Е) $I _ { 0 } / \sqrt { 2 }$