There Are ________ Oxygen Atoms in 30 Molecules of C₂₀H₄₂S₃O₂

There are ________ oxygen atoms in 30 molecules of C₂₀H₄₂S₃O₂.

A) 6.0 x 10²³
B) 1.8 x 10²⁵
C) 3.6 x 10²⁵
D) 1.2 x 10²⁴
E) 60