Use the paragraph to answer the question.
(1) Robert and his brothers always helped his dad maintain the family farm every weekend.
(2) they all take turns feeding the chickens, milking the cows, and watering the vegetables. (3) Afterward, their dad takes them out for ice cream. (4) After a hard weekends work, ice cream is always appreciated!
Which sentence contains an error in pronoun use?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4