Given below are two statements :
Statement I : There are several conformers for n-butane. Out of those conformers, 
is the least stable and most stable conformer is 
Statement II : As the dihedral angle increases, torsional strain decreases from (X) to (Y).
In the light of the above statements, choose the correct answer from the options given below :
- A
Both Statement I and Statement II are false
- B
Statement I is false but Statement II is true
- C
Statement I is true but Statement II is false
- D
Both Statement I and Statement II are true
Statement I: For n-butane, the fully eclipsed conformer (methyls at 0°) has the highest torsional and steric strain — least stable; the anti conformer (methyls at 180°) has the lowest strain — most stable. True.
Statement II: Going from the fully eclipsed (0°) to anti (180°) conformer, the dihedral angle increases and torsional strain decreases monotonically (with minor maxima/minima at gauche and eclipsed positions in between). True.
Both statements are correct.
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