The correct answer is: B. increase
When a transistor is connected in CB mode, the base current (IB) is the input current, the collector current (IC) is the output current, and the emitter current (IE) is the sum of IB and IC.
When a transistor is connected in CE mode, the base current (IB) is still the input current, but the collector current (IC) is now the output current, and the emitter current (IE) is the difference between IB and IC.
If the same bias voltages are applied to a transistor connected in CB mode and a transistor connected in CE mode, the base current (IB) will be the same in both cases. However, the collector current (IC) will be much larger in the CE mode than in the CB mode. This is because the collector current is proportional to the emitter current, and the emitter current is much larger in the CE mode than in the CB mode.
Therefore, the values of IE, IB and IC will increase when a transistor is connected in CE mode with the same bias voltages as when it is connected in CB mode.