The number of input words in a truth table always equals _____ where n is the number of inputs bits.

The number of input words in a truth table always equals _____ where n

1.	The number of input words in a truth table always equals _____ where n is the number of inputs bits.
A.	10n
B.	2n
C.	4n
D.	8n
Answer» C. 4n