Read the following context and choose the best option to answer the question.
Context: He doubled up in her arms , then went limp . His body rolled over , his face wedging in the roots of a drift stump . Rin struggled to turn him over again ; small pebbles stuck to the bared front of his body . One hand still clamped over the broad smear of blood .
Question: Why was Rin unable to turn him over ?
Options: 
- He was injured and was worried about hurting himself .
 - None of the above choices .
 - He was trapped in a video game type " freeze " .
 - He had someone elses blood on him and did n't want to get anything else bloody .


He was injured and was worried about hurting himself .