The only reason Grasper survived was because he had never allowed his feelings for Ryuichi and Noriko to cross into love . NG survived because it was a business , and if it fell he would just build another . It was purely monetary in nature , no such feeling as love involved . He lay still and was almost asleep when he heard the door to his office squeak open . He looked over , not having the energy or desire to get up .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason for Grapser surviving ?
Options:
- None of the above choices .
 - He allowed his feelings with Noriko to cross into love .
 - He was careful with his business relationships .
 - He was careful with his relationships .


He was careful with his relationships .