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: Eric adds gas to a 20ml container and Rita adds gas to a 10ml container. Which container holds more gas particles? 
 Option1: Rita 
 Option2: Eric 
 Explanation: In the larger container we will still have the same number of gas particles, but now they are filling a much larger space.

A: Eric
****
Q: Question: Greta has 15 resistors in series on her circuit, while Evan has 2 similar resistors in series on his circuit. Whose circuit has the greatest resistance? 
 Option1: Greta 
 Option2: Evan 
 Explanation: Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.

A: Greta
****
Q: Question: Joseph began sanding the plank faster and faster, increasing the friction on the rubbing surface. As he does so, the heat energy 
 Option1: increases 
 Option2: decreases. 
 Explanation: Friction causes the molecules on rubbing surfaces to move faster, so they have more heat energy.

A:
increases
****