Read this excerpt from a short story.

For her science project, Rina had predicted that beans planted in potting soil would sprout first. To her surprise, the first sprouts to appear were planted in her mother’s compost mix.

"I told you, Rina," her mother said. "Never underestimate the power of coffee grounds and orange peels."

Two days later, the beans in potting soil sprouted, but they were never as hearty as the other sprouts. Rina’s inaccurate prediction did not bother her. She was just happy to know how to improve her flower garden in the spring.

Which statement best summarizes this excerpt?

When Rina and her mother disagree about how to conduct an experiment, they discuss their options.
Although Rina does not make an accurate prediction, she was still able to grow sprouts in potting soil.
Rina’s experiment teaches her that composted soil fosters quick growth of bean plants.
Rina’s bean sprouts teach her that bean plants require coffee grounds and orange peels.