(166)^2 - (167)^2 =	Choose the correct option:
A) 1	B) 100	C) 229	D) 329	E) 335
Using the formula:   (a+1)^2 - a^2 = 2a+1   So, Answer = 167*2 + 1   = 334+1= 
<gadget id="calculator">334+1</gadget>
<output>335</output>
335= Answer = 335
<result>E</result>
(166)^2 - (167)^2 =