Some students are buying a boardgame together. If each person pays $$$60$$, they need another $$$60$$ for payment. If each person pays $$$70$$, they will have $$$10$$ left. How much is the boardgame? 
选项为:A:$$$600$$  B:$$$480$$  C:$$$690$$  D:$$$550$$  E:$$$720$$  请回答其中一个选项.