Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Which of the following statements most likely contributes to the view that derivatives have some role in causing financial crashes?
Option A:Derivatives are the primary means by which leverage and related excessive risk is brought into financial markets.
Option B:Growth in the number of investors willing to speculate in derivatives markets leads to excessive speculative trading.
Option C:Restrictions on derivatives, such as enhanced collateral requirements and credit mitigation measures, in the years leading up to crashes introduce market rigidity.

Answer: B