Let G(x) = tan x. Use the chain rule to determine G' (a). Which of the following best describes your use of the chain rule? The "inside function" is y = 25, and the "outside function" is y = tan x. The "inside function" is y = sec, and the "outside function" is y = x. O The "inside function" is y = tan x, and the "outside function" is y = 25. The chain rule must be used at least two times.