You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

Q: Question: Do electric cars pollute more or less than gas cars? 
 Option1: more 
 Option2: less 
 Explanation: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.

A: less
****
Q: Question: If Mary is building a rocket and she wants it to fly as high as possible, what should she do to the mass of the rocket? 
 Option1: increase it 
 Option2: decrease it 
 Explanation: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.

A: decrease it
****
Q: Question: Compared to the Sun, which is an average sized star, would VY Canis Majoris, the smallest known star, produce 
 Option1: more energy 
 Option2: less energy? 
 Explanation: Bigger stars produce more energy, so their surfaces are hotter.

A:
less energy?
****