Result a4 and b4....

Sorry, my english is'nt good.

In the code exist:

for(int i=0; i<4; i++)

Then i takes values: 0, 1, 2 and 3, but the answer A and B included a4 and b4

in the explanation said the answer A its correct, Why?

Thanks for the heads up, Alma!

We will make sure to have it fixed with the next deployment.