In a society consisting of $75\%$ cooperators and $25\%$ defectors, the average payoff to a cooperator who interacts with another cooperator is $8$ units, the average payoff to a cooperator who interacts with a defector is zero and the cost of scrutiny is $2.$ If the percentage of cooperators falls below $75\%,\_\_\_\_\_.$

Multiple Choice

defectors will have a higher payoff

less than $75\%$ of the cooperators will pay the cost of scrutiny

cooperators will pay the cost of scrutiny

it will no longer make sense for cooperators to pay the cost of scrutiny