Suppose that a paticular banking system supports encrypted transactions, and that decrypting each transaction consists of three sub-tasks A,B and C. The execution times of each task on a microprocessor versus a custom digital circuit are 50 ms versus 1 ms for A, 20 ms versus 2 ms for B, and 20 ms versus 1 ms for C. Partition the tasks among the microprocessor and custom digital circuitry, such that you minimize the amount of custom digital circuitry, while meeting the constraint of decrypting at least 40 transactions per second. Assume that each task requires the same amount of digital circuitry.