Which of the following pentoses exhibit optical activity?
$I$. $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$ $II$. $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$ $III$. $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
(Note: The structures provided are $I$: Ribose,$II$: Arabinose,$III$: Xylose. All these are aldopentoses with chiral centers.)
| $I$. $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$ | $II$. $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$ |
| $III$. $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$ |
(Note: The structures provided are $I$: Ribose,$II$: Arabinose,$III$: Xylose. All these are aldopentoses with chiral centers.)
- AAll of these
- B$II$ and $III$
- C$I$
- D$II$
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