If the system of linear equationsx1 + 2x₂ + 3x₃ = 6
x₁ + 3x₂ + 5x₃ = 9
2x₁ + 5x₂ + ax₃ = b
Is it consistent and having an infinite number of solutions, then?
(A) a ∈ R- { 8 } and b ∈ R- { 15 }
(B) a = 8, b can be any real number
(C) a = 8, b = 15
(D) b = 15, a can be any real number