Which of the following statements about encryption is NOT true?

1. Correct Answer
   Incorrect Answer
   a

   As the number of bits used to store a key increase in a linear fashion, the amount of possible keys increases exponentially.

2. Correct Answer
   Incorrect Answer
   b

   Website encryption is done using a form of symmetric encryption.

3. Correct Answer
   Incorrect Answer
   c

   A Caesar cipher is an example of symmetric encryption.

4. Correct Answer
   Incorrect Answer
   d

   Modern day encryption share some similarities to the concepts of a Caesar cipher.