If the Decomposition of Reactant a Follows First-Order Kinetics, What

Multiple Choice

If the decomposition of reactant A follows first-order kinetics, what concentration of A remains if:
[A]₀ = 0.273 M, k = 1.53 × 10 ^{− 2} minutes ^{− 1}, and the elapsed time = 1.61 hr?

A) 0.009 M
B) 0.0623 M
C) 0.109 M
D) 0.273 M