The normal boiling points of CBr₄ and C₁₈H₃₈ are 189.5 °C and 317 °C respectively. These two substances have the same number of electrons. Which of the following options best explains the differences in boiling temperatures?
a. CBr₄ is more polarizable as it is non-polar
b. CBr₄ is less polar
c. C₁₈H₃₈ is more polarizable as it has greater surface area of contact
d. C₁₈H₃₈ can engage in hydrogen bonding forces