You Land Your Inflatable Boat on a Sandbar at High

Multiple Choice

You land your inflatable boat on a sandbar at high tide in Southeast Alaska, which has a large semi- diurnal tide. You intend to be away from the boat for 12 hours, but come back early after only 8 hours. Your boat is, unfortunately, 400m from shore. How long will you have to wait to be able to use your boat assuming you can't carry it.?

A) 6 hours
B) 12 hours and 25 minutes
C) 4 hours and 25 minutes
D) 6 hours and 12 minutes