Question: Which Detroit artist has the highest hip-hop sales?

Is "In the 1990s and the new millennium, the city has produced a number of influential hip hop artists, including Eminem, the hip-hop artist with the highest cumulative sales, hip-hop producer J Dilla, rapper and producer Esham and hip hop duo Insane Clown Posse." the correct answer?
Available choices:
(a). yes
(b). no
(a).