There are 7 boys and 6 girls. They sit in a row randomly. What is the chance that all boys sit together?

• A. $$ {8 over 1717}$$
• B. $$ {7 over 1716}$$
• C. $$ {7 over 1516}$$
• D. $$ {9 over 1716}$$
• E. $$ {6 over 1715}$$