help....

Mr. McElroy enjoys listening to his MP3 player, which has 2,000 songs in five different genres of music. He took a sample of the number of each type of song it played on two different one-hour sessions when it was set to play a random mix. The counts are shown in the table below. Which proportion would predict the number of jazz songs he has stored on his MP3 player?

A) 6/20 = x/2000
B) 3/20 = x/2000
C) 2/4 = x/2000
D) 3/40 = x/2000