80 370 860 1550 2440 ?
Choose the correct choice from the following options:
A) 900 B) 840 C) 750 D) 860 E) 3530
10^2 - 20 = 80   20^2 - 30 = 370   30^2 - 40 = 860   40^2 - 50 = 1550   50^2 - 60 = 2440   60^2 - 70 = 3530.   ANSW3530R:3530
<result>E</result>
80 370 860 1550 2440 ?