Chemical Analysis of a Natural Organic Compound Important in the Synthesis

Chemical analysis of a natural organic compound important in the synthesis of cholesterol, steroids, and vitamin D in the human body is found to be 87.73% C and 12.27% H by mass.Mass spectrometry data give its molecular mass as 410 amu.How many empirical formula units are there in the molecular formula?

A) 6
B) 7
C) 4
D) 8
E) 10