Which One of the Following Is Not an Offensive Strategy

Which one of the following is not an offensive strategy option?

A) adopting or improving on good ideas of other companies (rivals or otherwise)
B) deliberately attacking those market segments where key rivals make big profits
C) launching a preemptive strike to capture a rare opportunity
D) offering an equally good or better product at a lower price
E) introducing new features or models to fill vacant niches in its overall product offering and better match the product offerings of key rivals