Identify the reaction order for each of the following rate constants. (k₁ = 3.1 × 10⁻⁴ sec⁻¹), (k₂ = 4.2 × 10⁻⁵ L mol⁻¹ sec⁻¹).
a) First order, Second order
b) Second order, First order
c) First order, Zero order
d) Zero order, Second order