Que: Consider the congruence 45≡3(mod 7). Find the set of equivalence class representatives. a. {…, 0, 7, 14, 28, …} b. {…, -3, 0, 6, 21, …} c. {…, 0, 4, 8, 16, …} d. {…, 3, 8, 15, 21, …} Answer: {…, 0, 7, 14, 28, …}