Dr. Lomdi was conducting an important experiment for Super Healthy Supplements. They wanted her to check how much a new iron supplement helped people. For the best results, those taking the supplements also needed to follow a restricted diet. Dr. Lomdi was assigned three test subjects—Hetal
Hans, Manu Machli and Biren Bhalu. Her job was to create a medical report of the subjects before and after the five-day experiment. For the duration of the experiment, her subjects would be living by themselves in a room each and not allowed to leave until it ended.

While going over her subjects’ testimony to compile her final reports, Dr. Lomdi found something suspicious.

Whom does Dr. Lomdi suspect of not following the instructions and why?