A word is defined as a sequence of four dots arranged in a row. Each dot is colored either red, yellow, or blue. How many distinct words can be formed? Choose the most appropriate option:
A) 36
B) 48
C) 64
D) 81
E) 120
3^4 = 81   The answer is 81.
<result>D</result>
A word is defined as a sequence of four dots arranged in a row. Each dot is colored either red, yellow, or blue. How many distinct words can be formed?