While Palpating the Thorax of a Patient Who Repeats the Words

While palpating the thorax of a patient who repeats the words "ninety-nine," you note a localized area of decreased tactile fremitus on the lower right side. Which of the following could explain this finding?
1) Atelectasis on the right
2) Right-sided lower pneumothorax
3) Right-sided lower pleural effusion
4) Obstruction of a bronchus in the right lung

A) 2, 3, and 4 only
B) 1 and 3 only
C) 3 and 4 only
D) 1, 3, and 4 only