Read the excerpt from heart of a samurai.

when they got closer, manjiro saw goemon’s grip shift on his stick. that stick was his katana, manjiro realized, his play sword. he remembered their vow to defend the island against barbarians.

a glance passed between the two boys, a glance that spoke of gnawing hunger, desperate thirst, endless wind, penetrating cold. nothing could be worse than staying on this island, the glance said.

what can readers infer based on details in the excerpt?

manjiro and goemon have developed a plan to capture the barbarians.
manjiro and goemon will not leave the island, because they fear the barbarians.
manjiro and goemon will not share their food and water with the barbarians.
manjiro and goemon have no choice but to accept from the barbarians.