7122,6521,8332,4743,9911,387?
find the value of the question tag. Choose the correct choice from the following answers
A) 1 B) 2 C) 3 D) 4 E) 5
7+1+2+2= 
<gadget id="calculator">7+1+2+2</gadget>
<output>12</output>
12   6+5+2+1= 
<gadget id="calculator">6+5+2+1</gadget>
<output>14</output>
14   so     9+9+1+1= 
<gadget id="calculator">  9+9+1+1</gadget>
<output>20</output>
20   3+8+7+x=22   so x=4   ANSWER:4
<result>D</result>
7122,6521,8332,4743,9911,387?
find the value of the question tag.