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Designer of a processor company wants total of 14 instructions in the instruction set. He experiences a total of 75 unique control signals in order to execute them. The instruction set has ADD and SUB operations in addition to data transfer and logical operations. The designer starts designing the control unit using one of the two approches of the design. As an auditor, you are supposed to analyze the design and recommend the optimum approch for the design. The appropriate suggestion would be: