Grading Rubric - Lab 3 Lab Value: 70 points ================================================ Part 3 - Makefiles (70 points): Item 1, Makefile-1 (6): Item 2, Makefile-2 (6): Item 3, Description of operation (10): Item 4, Makefile-3 (6): Item 5, Makefile-4 (6): Item 6, Description of operation of Makefile-4 (16): Question 7 (10): Screenshot 8(10):