
- ✓$3-(3,4-$ Dihydroxyphenyl $)$ propenoic acid
- B$3-(3,4-$ Benzenediol $)$ propanoic acid
- C$4-$ Propenoic benzene $-1, 2-$ diol
- D$2-$ Carboxypropenyl benzene $-1,2-$ diol

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Statement $I:$ Primary aliphatic amines react with $HNO _{2}$ to give unstable diazonium salts.
Statement $II:$ Primary aromatic amines react with $HNO _{2}$ to form diazonium salts which are stable even above $300 \,K$.
In the light of the above statements, choose the most appropriate answer from the options given below:
$Q$ is
Statement $-I :$ The pentavalent oxide of group$- 15$ element. $E _{2} O _{5}$. is less acidic than trivalent oxide. $E _{2} O _{3}$. of the same element.
Statement $-II :$ The acidic character of trivalent oxide of group $15$ elements. $E _{2} O _{3}$. decreases down the group.
In light of the above statements. choose most appropriate answer from the options given below
