A compound has the empirical formula C₁₀H₈Fe. A solution of 0.26g of the compound in 11.2 g of  benzene (C₆H₆ ) boils at 80.26°C. The boiling point of benzene is 80.10°C; the K_b is 2.53°C/molal. What is the molecular formula of the compound? 

• A

  ${\mathrm{C}}_{30}{\mathrm{H}}_{24}{\mathrm{Fe}}_3$

• B

  ${\mathrm{C}}_{10}{\mathrm{H}}_8\mathrm{Fe}$

• C

  ${\mathrm{C}}_5{\mathrm{H}}_4\mathrm{Fe}$

• D

  ${\mathrm{C}}_{20}{\mathrm{H}}_{16}{\mathrm{Fe}}_2$