Power on the Go buys portable generators for $$450$ and sells them for $$740.$ The company pays a sales commission of $5\%$ of sales revenue to the sales staff. The company pays $$4,000$ a month rent for the store, and also pays $$1,800$ a month to staff in addition to the commissions. The company sold $700$ generators in June. If the company prepares a contribution margin income statement for the month of June, what would be the contribution margin?

A$.$ $$177,100$

B$.$ $$340,900$

C$.$ $$203,000$

D$.$ $$518,000$