Recently,beekeepers Have Noticed an Alarming and Sudden Disappearance of Honeybees

Multiple Choice

Recently,beekeepers have noticed an alarming and sudden disappearance of honeybees from their hives.Some beekeepers and environmentalists worry that crops genetically engineered to produce Bt insecticidal toxin may be killing the bees.Without data from a scientific experiment,is it reasonable to state that Bt-containing crops are responsible for the loss of honeybees?

A) Yes, because it is obviously the Bt crops killing the bees.
B) Yes, because there cannot possibly be any other explanation for the loss of the honeybees.
C) No, because there is no reason to suspect that an insecticide would kill honeybees.
D) No, because there could be some other unknown or unmentioned factor affecting the survival of honeybees.