A QR code is known as a(n)____ bar code because it stores information in both a vertical andhorizontal direction. The information it stores can correspond to a web address.  a. universal   b. optical...

A QR code is known as a(n)____ bar code because it stores information in both a vertical andhorizontal direction. The information it stores can correspond to a web address.  a. universal   b. optical   d. multi-directional