单项选择题
When the killer paramecia (K/K+ kappa particle) and sensitive Paramecium k/k) hybrid, if the bonding time is long, the result are
A、K/K(sensitive) and k/k (sensitive)
B、K/k+ kappa (killer) and K/k (sensitive)
C、K/K (sensitive) and k/k+ kappa (sensitive)
D、K/k+ kappa (killer) and K/k+kappa (killer)