Critical Reasoning (CR) | Re: At a local health club, almost 80% of the revenue from gym entrance

The argument talks about less than 40% of the cafe's revenues coming
from the health club members, where as 80% of the revenue(from gym
entrance fees) comes from the health club members(who have an annual
membership)

Since we need to find out what helps explain the surprising finding regarding the cafe's revenue,
onlyOption C(the cafe is most appealing to people who have never been to the club before)
gives us a clear reason why the revenue of the cafe is high, even though the health club