Carl bought 7 packs of pencils. He now has 42 pencils. He writes that 42 is 6 times as many as 7. Which comparison sentence below can he use to show the comparison?

A7 more than 6 is 42

B7 is 6 times as many as 42

C42 is 7 times as many as 6

D6 is 7 times as many as 42