After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?

the device involved in the collision with the lowest MAC address
the device involved in the collision with the lowest IP address
any device in the collision domain whose backoff timer expires first
those that began transmitting at the same time

ccna exploration 1 chapter 9 Exam Question And Answers 

After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?