Last Year, a Company's Salespersons, A, B, and C Recorded

Multiple Choice

Last year, a company's salespersons, A, B, and C recorded sales as follows: "A" recorded three sevenths (3/7) of the total, "B" recorded one quarter (1/4) of the total and "C" recorded the rest of the sales. Express, in lowest terms, the sales ratio of A: B:C.

A) 3: 7: 4
B) 7: 4: 1
C) 3: 1: 6
D) 21: 7: 28
E) 12: 7: 9