Toluene (9.2 g, molar mass 92 g/mol) is chlorinated with $\mathrm{Cl}{}_2$ and $\mathrm{FeCl}{}_3$ so that all of it is consumed. The ring monochlorination products (only ortho and para isomers formed) amount to 80% of the theoretical yield based on toluene, and the ortho : para ratio is 3 : 2 by moles. Using atomic masses H 1, C 12, Cl 35.5, the mass of 4-chlorotoluene formed is nearest to

1. A6.07 g
2. B10.12 g
3. C4.05 g
4. D5.06 g