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, }