Given the following vector calculation where all A and B numbers are 9-bit long. Assuming 6-bit full adder (FA) blocks, each needs 4.91 seconds to complete its operation, without designing just find The total number of A blocks used 1 The number of levels the circuit have 2 The total time that the circuit needs to give the final result 3 A B A A B2 Az + B3 N + N + N + N + N + N A B. As B. As B6