find out the wrong number in the given sequence of numbers
15,16,34,105,424,2124,12756	Choose the correct choice from the following choices:
A) 105
B) 424
C) 2124
D) 15
E) 34
15*1+1= 
<gadget id="calculator">15*1+1</gadget>
<output>16</output>
16   16*2+2= 
<gadget id="calculator">16*2+2</gadget>
<output>34</output>
34   34*3+3= 
<gadget id="calculator">34*3+3</gadget>
<output>105</output>
105   105*4+4= 
<gadget id="calculator">105*4+4</gadget>
<output>424</output>
424   424*5+5= 
<gadget id="calculator">424*5+5</gadget>
<output>2_125</output>
2125   2125*6+6= 
<gadget id="calculator">2125*6+6</gadget>
<output>12_756</output>
12756   wrong number is 2124   ANSWER:2124
<result>C</result>
find out the wrong number in the given sequence of numbers
15,16,34,105,424,2124,12756