challenge: What was the Atlantic Oak's role in the incident involving the dredging barge Shovel Master in 2008?
  
  A. It towed the capsized Shovel Master for a short distance before it sank
  B. It towed the Shovel Master from Saint John to Halifax for a refit
  C. It rescued the crew of the Shovel Master
  D. It was being towed by the Shovel Master when the incident occurred
  Answer: 