Which of the following is NOT true about Sholom Aleichem?
A) Sholom Aleichem was a pen name used by a Ukrainian-born Jewish writer.
B) He is best known for his humorous and poignant stories about Tevye the Dairyman.
C) Sholom Aleichem wrote primarily in Russian and was not fluent in Yiddish.
D) His works have been adapted into the musical "Fiddler on the Roof."