Read each sentence carefully. Which sentence uses brackets correctly? The climbers told the reporter, "The fellow hikers in the group climbing the mountain were from South America [what a coincidence!]." The climbers told the reporter, "The fellow hikers in the group climbing the mountain [Denali] were both from South America." The climbers told the reporter, "The two teams [although many others attempted] who recently climbed Denali were from South America." The climbers told the reporter, "The two teams who recently climbed Denali [the highest mountain in North America] were from South America."