You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Paragraph: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.
 Question: Kathy did some experiments on two different alkanes and one of the alkanes had twice as many carbon atoms than the other. She would notice that which alkane would require a higher temperature to melt 
 Choices: A)alkane with fewer carbon atoms 
B)alkane with more carbon atoms?
alkane with more carbon atoms?

Paragraph: In electromagnetic waves with higher frequencies, photons have more energy.
 Question: Don is looking at electromagnetic waves, and sees that the one's he observing have higher frequencies. Don is able to know then that the photons have energy that is 
 Choices: A)higher 
B)lower
higher

Paragraph: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.
 Question: If Mary is cleaning her pool and she lowers the pH value of the water, what happens to the acidity of the water? 
 Choices: A)increases 
B)decreases

increases