| Which radio call-in plan is the most prudent? |
| A) Two responsible persons should be designated so that one can relieve the other as necessary. |
| B) There must be a designated responsible person who knows they are expecting your call at a certain time. |
| C) There must be a designated responsible person available at all times to receive your call. |
| D) The designated responsible person must be instructed to call the Coast Guard search and rescue authorities immediately if your call does not come in on schedule. |
