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The correct statement(s) among I to III ...

The correct statement(s) among I to III with respect to potassium ions that are abundant within the cell fluids is/ are :
I. They activate many enzymes
II. They participate in the oxidation of glucose to produce ATP
III. Along with sodium ions, they are responsible for the transmission of nerve signals

A

I and III only

B

I, II and III

C

III only

D

I and II only

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