what are true about the "bus" incontext of embedded systems?

(a) A bus is a set of wires or other interconnections. Ona printed circuit board, a bus can be just tracks on the board.

(b) A bus is dedicated to provide a general-purpose datainterchange between a set of sub-systems in a computer-basedsystem.

(c) A bus can only carry digital information in one designateddirection.

(d) The main examples for bus are the data bus and the addressbus.

(e) The data bus provides the means for data to be moved to or from different parts of the system, while the address bus provides the means for the address of the data to be moved to or from different parts of the system.