What happened to Eliza P. Donner’s cousin Mary that Mr. Oakley had to carry her? 
 A She had breathing problems and was unable to hike in the snow without losing breath and passing out. 
 B Mary had been paralyzed from the waist down before the Donner Party originally started west. 
 C She broke her ankle when her leg was caught in a trap that had been set for wild animals. 
 D It was so cold one night that she couldn’t feel that her leg had rolled into the fire and burned until it was maimed.