Energy from the Sun can be used instead of fossil fuels to produce electricity. However, most devices that convert solar energy into electricity only work when the Sun is out.

To improve solar energy technology, scientists have developed a solar flow battery. This device absorbs solar energy and converts it into electrical energy that can be used immediately. If no electricity is needed, the device converts the energy into stored chemical energy that can be used later to produce electricity.

What is an advantage of the solar flow battery?
A.
It allows solar energy to be used to produce electricity at night.
B.
It helps solar energy to perform chemical reactions like creating fossil fuels.
C.
It increases the rate at which solar energy can be converted into electricity.
D.
It decreases the cost of using solar energy to generate electricity.