Which of the following statements are correct?
A、QR code is the trademark for a type of matrix barcode, first designed in America.
B、A QR code uses two standardized encoding modes to efficiently store data.
C、WFOE is short for “Wholly Foreign Owned Enterprise”.
D、B2C means business that sells products or provides services to end-user consumers.
E、A barcode is a machine-readable optical label that contains information about the item to which it is attached.