What is a concern that some scientists have about genetically engineered crops?

A) That genetic engineers are trying to "play God"
B) That the created viruses in these crops may cause new, more serious diseases when they combine with viral genes already in our bodies
C) That eating genetically engineered crops (specifically corn) will create "Frankenstein-like" genetic mutations in people and animals
D) That it is immoral to use human embryos to create genetically engineered crops

B