Use the principle of mathematical induction to show that the given statement is true for all natural numbers n.

S_n;6+7+8+...+(n+5)=1/2n(n+11)

What is the first step in a mathematical induction proof?

Write the statement for n=1.

Is the statement true?

What is the next step in the proof?

Write the statement for S_k

Now show that if the statement is true for some natural number k, then it is true for k plus 1.k+1.

Choose the correct induction statement to prove.What should be done with this statement?