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Choose the statement that is incorrect about the following conformations of butane.

(A) Conformation (i) is more stable than conformation (ii).

(B) Conformation (v) is less stable than (ii) because of van der Waals repulsive forces (nonbonded interactions) and torsional interactions.

(C) Conformations (ii) and (iii) have different stabilities.

(D) Conformation (iv) is the least stable of all the conformations shown.

(E) Gauche conformations of butane are (ii) and (iii).