The first doughnut is priced at $1 and then if you purchase additional doughnuts as dozens then the price is $6/dozen. What is the total number of doughnuts purchased if you paid $21?	Choose the correct choice from the following options:
A) 33
B) 35
C) 37
D) 39
E) 41
$21 = 3 * $6 + $3   The number of doughnuts is 3*12 + 3= 
<gadget id="calculator">3*12 + 3</gadget>
<output>39</output>
39   The answer is 39.
<result>D</result>
The first doughnut is priced at $1 and then if you purchase additional doughnuts as dozens then the price is $6/dozen. What is the total number of doughnuts purchased if you paid $21?