A store open $24$ hours per day is interested in determining store traffic. It found that customers arrive uniformly at the rate of $10$ customers per hour. The store has a single worker to serve customers. The worker takes an average of $5$ minutes to serve a customer If we assume that every customer must be served, using Little's Law, what is the average number of customers being served?

$240$ customers

$288$ customers

$0\mathrm{.}833$ customers

$48$ customers