Which statement best reflects the sociobiological theory of jealousy?

Which statement best reflects the sociobiological theory of jealousy?
 
  a. Emotional infidelity is more upsetting to women, because if her partner leaves, her children would lose their father's resources; sexual infidelity is more upsetting to men, because if his partner gets pregnant by someone else, he may end up taking care of children that are not his own
  b. Emotional infidelity is more upsetting to men, because if his partner leaves, his children would lose their mother's resources; sexual infidelity is more upsetting to women, because if her partner impregnates someone else, she may end up taking care of children that are not her own
  c. Emotional infidelity is more upsetting to women, because if her partner impregnates someone else, she may end up taking care of children that are not her own; sexual infidelity is more upsetting to men, because if his partner leaves, his children would lose their mother's resources
  d. Emotional infidelity is more upsetting to men, because if his partner gets pregnant by someone else, he may end up taking care of children that are not his own; sexual infidelity is more upsetting to women, because if her partner leaves, her children would lose their father's resources