Which sentence uses correct capitalization?

AI told Jilly and Ryan to take a left at Main Street and then head South for two miles before hitting Bolt Avenue.

BI told Jilly and Ryan to take a left at Main Street and then head south for two miles before hitting Bolt Avenue.

CI told Jilly and Ryan to take a left at Main street and then head south for two miles before hitting Bolt avenue.

DI told Jilly and Ryan to take a left at Main street and then head South for two miles before hitting Bolt avenue.