Answer it correctly please. I will rate accordingly with multiple votes. This is my last attempt. Explain. Answer only if 100% correct.

Consider the following shells of gas in the core of a massive star: carbon, helium, hydrogen, iron, neon, oxygen, silicon. (a) Considering only silicon, oxygen, carbon, helium, and hydrogen, rank the gases in order that they serve as the primaryr fuel in a massive star. rst iSeIecti V Select v Sele[:t V Select V last iSeIecti V (b) Rank the 5 fuels in the order of the amount of time that they serve as the primary fuel in a massive star from shortest to longest: silicon, oxygen, carbon, helium, hydrogen. shortest Select V Select v Select V longest Select V