Read this excerpt from Susan Butcher and the Iditarod Trail. The wind was fierce, often blowing the sled over and keeping the dogs at a slow trot. Togo went steadily on. The storm had swept much of the snow off the trail and exposed the glare ice below. The dogs frequently slipped and skidded sideways, endangering Seppala's grasp on the sled. The light began to fade. As night approached, it was only Togo's remarkable sense of direction and Seppala's determination that brought them across the bay and back onto the original trail.

What can a reader infer based on the information in the excerpt?

Seppala’s dog Togo was not used to pulling a sled during a fierce storm.
Seppala almost gave up on trying to keep his dogs moving during the night.
Seppala and his dog Togo were too cautious on the trail and lost time.
Seppala and his dog Togo were extremely courageous and strong-willed.