The Reaction Below Is First Order in [H₂O₂]: 2H₂O₂ (L)→

The reaction below is first order in [H₂O₂]: 2H₂O₂ (l) → 2H₂O (l) + O₂ (g)
A solution originally at 0.600 M H₂O₂ is found to be 0.075 M after 54 min.The half-life for this reaction is ________ min.

A) 6.8
B) 18
C) 14
D) 28
E) 54