MCQ
Which of the following are aromatic?


- ✓$B$ and $D$ only
- B$A$ and $C$ only
- C$A$ and $B$ only
- D$C$ and $D$ only


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(Given $R=2.0 \mathrm{cal} \mathrm{K}^{-1} \mathrm{~mol}^{-1}$ )