This is a question with answer options. Goal: How can I help keep my house cooler in the summer time?

Which of the following methods is more reasonable for accomplishing this goal?

Choose from: 1). To help keep your house cooler in the summer time, you can use plastic wrap to line your windows to reflect heat and light from the sun.; 2). To help keep your house cooler in the summer time, you can use aluminum foil to line your windows to reflect heat and light from the sun.;...I think the answer is
2).