Which of the following statements is NOT true? Select one: O a. Hazards are caused by logic gates where the inputs become valid at different times b. If there is a hazard in a circuit, it means that it is possible for a signal to violate the laws of Boolean algebra O c. A glitch is a temporary violation of the laws of Boolean algebra O d. After the input to a logic gate changes, it takes some time for the gate to make its output valid O e. At all times, the values of the signals in a circuit satisfy the laws of Boolean algebra Which one of the following statements is NOT true? Select one: O a. A register contains a flip flop and a multiplexer Ob. During the middle of a clock cycle, a register ignores its input O c. A 4-bit register contains four separate 1-bit register circuits O d. When the input to a register changes, if the load input is 1 then the output will change after one gate delay Which statement is NOT true? Select one: O a. A register file can only change the state of a register at a clock tick O b. A register file uses a demultiplexer to determine which register to load O c The number of registers in a register file must be a power of 2 O d. A register file can hold some variables in a computer program O e. A register file uses a multiplexer to determine which register to read out O f. A register file can load a register in the middle of a clock cycle