Use mathematical induction to prove the statement for all positive integers n. 2+14+26++ (12n-10)= n(6n-4) What is the first step in a mathematical induction proof? OA. Show that S is true. OB. Show that So is true. ***** OC. Show that Sk is true. D. Show that Sk + 1 is true. Show that 2+14+26++ (12n-10)= n(6n-4) for n = 1. Write the statement S. 2= (Do not simplify.) Simplify S, on the right. 2= Is S a true statement?