4) With time and the release of more recordings, Billie became more commonly known. She recorded with Count Basie and Artie Saw in the late 1930s. A number of Billie’s songs became famous even outside the world of jazz, and she began to break out from her genre. In 1939, Billie recorded one of her most famous songs, Strange Fruit. This lamentable and soulful single was about acts of racism in the South. Billie’s music touched many people. After the release of Strange Fruit, Billie became more famous and sang all around New York. During the early 1950s, Holiday continued recording and did a successful tour of Europe.

What is the cause and effect relationship suggested in paragraph 4?

A) Billie Holiday wrote the song, "Strange Fruit," after her European tour.
B) The release of her single, "Strange Fruit," caused acts of racism in the South.
C) Count Basie and Artie Saw were responsible for Billie Holiday's success in Europe.
D) Billie Holiday became more famous due to an increased number and variety of recordings.