If 2 over 7 of a ton of sand covers 7 over 8 of the ground under a piece of playground equipment, how many tons of sand are required to cover the entire area under the playground equipment?

A. 65/56 Ton(s)
B. 16/49 Ton(s)
C. 1/4 Ton(s)
D. 5/7 Ton(s)