Rule #1: Use the serial comma immediately before the coordinating conjunction in a series containing three or more items. Which sentence follows the rule from the style guide correctly? O Representatives from India, Bangladesh, Sri Lanka, Nepal and Bhutan attended the South Asian youth conference. Representatives from India, Bangladesh, Sri Lanka, Nepal, and Bhutan attended the South Asian youth conference, Representatives from India, Bangladesh, Sri Lanka, Nepal and, Bhutan attended the South Asian youth conference. Representatives from India, Bangladesh, Sri Lanka, Nepal and Bhutan, attended the South Asian youth conference.​