Now consider the following two 8-bit binary numbers A and B: A = 1100 0000 B= 1111 0000 3. Assume that A and B are two unsigned binary numbers and an 8-bit unsigned adder/subtractor is used a) (5 points) Give a convincing reason why or why not there will be an overflow when adding these two numbers (A+B). b) 6 points) Give a convincing reason why or why not there will be an overflow when subtracting these two numbers (A-B). 4. Assume that A and B are two 2's complement signed binary numbers and an 8-bit signed adder/subtractor is used a) (5 points) Give a convincing reason why or why not there will be an overflow when adding these two numbers (A+B). b) ( points) Give a convincing reason why or why not there will be an overflow when subtracting these two numbers (A-B)