Which option correctly uses commas to set off a nonrestrictive clause? A. Some scientists believe the island of Santorini, which is. Near Greece, is the basis for the ancient legend of Atlantis. B. Some scientists believe the island of Santorini which is near Greece is the basis for, the ancient legend of, Atlantis. C. Some scientists believe the island of, Santorini, which is near Greece is the basis for the ancient legend of Atlantis. D. Some scientists believe the island of Santorini which is near Greece, is the basis for the ancient legend of Atlantis.