3. (25 pts) Student Grading A teacher is grading the students in 4 subjects (Math, Spelling, English, and History) to see whether or not they will graduate. If a student passes Math and Spelling, they will graduate. If a student passes either English or History, they will graduate. All other students will not graduate. Set-up the appropriate truth table, simplify using K-maps. Implement, using LogiSim, the simplified logic circuit with optimal number of logic gates. 4. (25 pts) Propose, formulate and solve (like the problems above) your own digital design