Recently Sarah Was Informed That She Had a Thyroid Disorder

Recently Sarah was informed that she had a thyroid disorder. Her family noticed that she had become moody and lost interest in playing the piano. They also noticed that she seemed more tired than usual, and only ate small amounts of food. What is the most likely explanation for Sarah's depression?

A) Sarah's depressed mood resulted from feeling misunderstood by her family
B) Sarah's depressed mood is probably related to thyroid disease
C) Sarah's depressed mood manifested without a recent event triggering the symptoms
D) Sarah's depressed mood is her way of getting sympathy from her family