Comparing Hypotheses on Sunlight Effects on Plants

Two scientists, Dr. A and Dr. B, are investigating the effect of sunlight on plant growth. Dr. A hypothesizes that increased sunlight exposure leads to faster plant growth, while Dr. B believes that too much sunlight may actually hinder growth due to water evaporation and increased temperature. They conduct an experiment using two groups of identical plants, varying the amount of sunlight each group receives.

Which of the following hypotheses compares the viewpoints of Dr. A and Dr. B?