Judges will select 6 finalists from the 7 contestants entered in a singing competition. The judges will then rank the contestants and award prizes to the 3 highest ranked contestants: a blue ribbon for first place, a red ribbon for second place, and a yellow ribbon for third place. How many different arrangements of prize-winners are possible? Choose the correct choice from the following answers:  A) 140  B) 21  C) 210  D) 420  E) 1,260
First Select 5 from 7 contestants and then select top 3 from those 5 =   7C6*6C3 = 7 * 20= 
<gadget id="calculator">7 * 20</gadget>
<output>140</output>
140   140NS:140
<result>A</result>
Judges will select 6 finalists from the 7 contestants entered in a singing competition. The judges will then rank the contestants and award prizes to the 3 highest ranked contestants: a blue ribbon for first place, a red ribbon for second place, and a yellow ribbon for third place. How many different arrangements of prize-winners are possible?