If a₁, a₂, a₃…….. are in AP then if a₇ = 15, then the value of common difference that would make a₂ a₇ a₁₂ greatest is?

If a₁, a₂, a₃…….. are in AP then if a₇ = 15, then the val

1.	If a₁, a₂, a₃…….. are in AP then if a₇ = 15, then the value of common difference that would make a₂ a₇ a₁₂ greatest is?
A.	2
B.	0
C.	4
D.	9
Answer» C. 4