Read the excerpt from "Homesickness"

'What will you tell the school?' I asked him, trembling.

'I'll say you had a very severe infection of the stomach which I am curing with pills,' he answered smiling. 'It will mean that you must stay home for three more days. But promise me you won't try anything like this again. Your mother has enough on her hands without having to rush over to fetch you out of school.'

What does the author express about the doctor through the details in this excerpt?

The doctor thinks the narrator is actually sick.
The doctor misses his own family as well.
The doctor is angry at the narrator for faking his illness.
The doctor understands how the narrator is feeling.

The author expresses that the doctor understands how the narrator is feeling through the details in this excerpt. The doctor is sympathetic towards the narrator's homesickness and takes measures to help him stay home from school and be with his family.