Eleanor and Darnell need to decide which one of them will take time off from work to complete the rather urgent task of shearing their llamas. Eleanor is pretty good with a pair of shears; she can shear the llamas in 30 minutes. Darnell is somewhat slow; it takes him 5 hours to shear the llamas. Eleanor earns $160 per hour as a psychiatrist, while Darnell earns $25 per hour as a cobbler. Keeping in mind that either Eleanor or Darnell must take time off from work to shear the llamas, who has the lower opportunity cost of completing the task?