Match the names of the experiments listed under column I with the aim of the experiment given under column II. Choose the answer which gives the correct Combination of the alphabets.
ColumnIColumnIIA.Girdling experiment1.Translocation in phloemB.Cobalt−chloride paper method2.Unequal transpiration on leaf surfacesC.Crescograph3.GrowthD.Bell−jar experiment4.Transpiration