A word is defined as a sequence of four dots arranged in a row. Each dot is colored either yellow or blue. How many distinct words can be formed?	Choose the correct choice from the following answers.
A) 4	B) 8	C) 12	D) 16	E) 20
2^4 = 16   The answer is 16.
<result>D</result>
A word is defined as a sequence of four dots arranged in a row. Each dot is colored either yellow or blue. How many distinct words can be formed?