We have,

5x – 15y – 8 = 0

And,

Here, a₁ = 5, b₁ = – 15 and c₁ = – 8

And, a₂ = 3, b₂ = – 9 and c₂ =

∴ , and

Clearly,

Hence, the given system has a unique solution and the lines are coincident

∴ Option A is correct