Scientists Performed a Series of Experiments That Were Successful in Converting

Scientists performed a series of experiments that were successful in converting skin cells into neurons, with the goal of generating neurons for cellular therapies.This work would be an application of the basic principle that

A) differentiation can arise by different cells having different promoters.
B) differentiation can arise by different cells having different transcription factors.
C) differentiation can arise by different cells having different enhancer elements.
D) there is no difference in gene expression between different cell types.
E) there is no way to predict or control cellular fate.