Write a multi-choice question for the following article, with the given choices and answer: Article: KATHMANDU, Nepal (CNN) - Nepal has given its security personnel permission to shoot pro-Tibet demonstrators during China's Olympic flame climb to Mount Everest's summit early next month. "About 25 soldiers and policemen have established camps on the mountain and they have been ordered to use force if necessary to stop any anti-Chinese activities," Mod Raj Dotel, spokesman for the home ministry, said Sunday. "This could mean shooting if necessary." Security personnel will also check mountain climbers for non-essential expedition materials, Dotel added. "If anyone is found with anti-Chinese material their permit will be canceled and returned from the mountain," he said. Chinese climbers plan to take the Olympic flame to the top of the world's highest peak, at 8,848 meters (29,028 feet) as part of the global relay leading up to the August 8 opening of the Summer Olympics in Beijing. Spring is the most popular season for climbing Mount Everest, which straddles the border between Nepal and Tibet, an autonomous region of China. The Nepali government has given permits to dozens of climbers from 30 expeditions this season. But between May 1 and May 10, climbers are _ from going above 6,400 meters until the torch run is completed. China plans to take the Olympic flame to the summit sometime then. Bad weather conditions allow only about two opportunities in May for a push to the summit. The Chinese have not allowed any expedition to climb the mountain from the north side, according the Kathmandu representative of the Tibet China Mountaineering Association. Almost every day in the past month, Nepalese police have arrested pro-Tibet protesters from in front of the Chinese Embassy and the United Nations offices. The demonstrators are released later in the evening. Supporters of Tibet punish the government's attitude toward the autonomous region, and many believe China should not have been awarded the honor of hosting the Olympic Games. Earlier torch relay stops in London, England; Paris, France; and San Francisco,... Options: A once B twice C three times D as many times as they can Answer: B twice Question:
A:
How many times Climbers can reach the top of the mountain at most in May?