The USB Power Delivery revision 2.0 specification has been released as part of the USB 3.1 suite. It covers the Type-C cable and connector with four power/ground pairs and a separate configuration channel, which now hosts a DC coupled low-frequency BMC-coded data channel that reduces the possibilities for RF interference. Power Delivery protocols have been updated to facilitate Type-C features such as cable ID function, Alternate Mode negotiation, increased VBUS currents, and VCONN-powered accessories.

Answer this question, if possible (if impossible, reply "unanswerable"): What does the USB Power Delivery revision 2.0 specification cover?
Type-C cable and connector with four power/ground pairs and a separate configuration channel