A biologist studying the electric organ in a fish species observes very little actin or myosin in the cells,even though they are known to have evolved from muscle cells.Several hypotheses have been proposed to account for this observation.Which hypothesis is the most probable?

Question

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The fact that there is very little actin or myosin in the cells suggests that the genes for actin and myosin are not being expressed at a high level in these cells. This is the most probable hypothesis in this scenario as it is a common mechanism for gene expression to vary between different cell types, even within the same organism. The other hypotheses (A, B, C, E) are less likely as they do not account for the observed lack of actin and myosin in the cells.

A Biologist Studying the Electric Organ in a Fish Species