A gym advertises that at least $85\%$ of its members attend more than once per week. In a hypothesis test of this claim, which of the following describes a Type II error?

• A. Concluding that less than $85\%$ attend more than once per week when at least $85\%$ do
• B. Concluding that at least $85\%$ attend more than once per week, whereas fewer than $85\%$ do
• C. Concluding that exactly $85\%$ attend more than once per week
• D. Concluding that attendance cannot be determined

Answer: (B)