For the reaction A to Xp, when [A] = 2.2 mm, the rate was found to be 2.4 mms⁻¹. On reducing the concentration of A to half, the rate of the reaction will be ________.
1) 1.2 mms⁻¹
2) 2.4 mms⁻¹
3) 4.8 mms⁻¹
4) Cannot be determined