1. Akib and Rakib are two students from same class. One day both of them faced a huge problem, Their teacher asked them to write summation code using Python. They both decide to call the python summation()/add() library to add two numbers. For using built in library their teacher got angry. He later assigned them a new task, to perform the same task using a combinational circuit. a) When using python library which buses are called from CPU sequentially? Draw the circuits and explain. b) For the last line of the stem, which kind of circuit will you use and why? c) WHy usiing python libray made the teacher angry, explain on the context of computer architecture.