Use the image to answer the question Cassie is working on an investigation for science. She mixes a yellow liquid and a solid chemical in a flask. Which answer best describes her results?

A.
A physical change occurred because the substances kept their properties.

B.
A physical change occurred because the liquid turned yellow.

C.
A chemical change occurred because a gas was formed from a chemical reaction.

D.
A chemical change occurred because the liquid was boiled.

PLEASE HURRY