Which of the Following Statements Is True of Radio Frequency

Multiple Choice

Which of the following statements is true of radio frequency identification (RFID) tags?

A) They represent numerical data of a product by varying the thickness and pattern of vertical bars printed on the product's packaging.
B) They require direct line-of-sight scanning for the radio waves to scan a product perfectly.
C) They require a reader that tunes into a specific frequency to determine the number and location of products.
D) They are installed in a handheld or pen-type scanner that reads and records data instantly.