`C_(2)underset((A))(H_(4))Cl_(2)overset(KCN)to(B)overset(H_(2)O^(+))to(C)overset(Delta)to(D)`
The compound D has the characteristic(s)

Options

A. It is succinic anhydride if (A) is vic dihalide
B. it is propionic acid if (A) is gem dihalide
C. it is succinic anhydride if (A) is gem dihalide
D. it is propionic acid if (A) is vic dihalide

Explanation

To solve the problem step by step, we will analyze the reactions involving the compound \( C_2H_4Cl_2 \) (compound A) and determine the characteristics of compound D after the reactions with \( KCN \), \( H_2O^{+} \), and heating.

### Step 1: Identify Compound A
Compound A is \( C_2H_4Cl_2 \). It can exist as either a vicinal dihalide (where the two chlorine atoms are on adjacent carbon atoms) or a geminal dihalide (where both chlorine atoms are on the same carbon atom).

- **Vicinal Dihalide Structure**: \( CH_2Cl-CH_2Cl \)
- **Geminal Dihalide Structure**: \( CH_3CCl_2 \)

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