Which of the Following Is True Regarding Differentiation Strategy

Which of the following is true regarding differentiation strategy?

A) Differentiation strategy cannot protect a company from price sensitivity.
B) Brand images play a negligible role in differentiation strategies.
C) Companies using this strategy have to build large-scale facilities.
D) Companies have to control their overhead costs to use this strategy.
E) If a company succeeds in this strategy, it achieves above-average returns.