What is the final conclusion? A. There is sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. B. There is not sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. C. There is not sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches. D. There is sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches