Which among the following statements is correct?
(i) Glycerol on reaction with oxalic acid at 110°C (383 K) and followed by heating and hydrolysis gives formic acid and glycerol.
(ii) Glycerol on reaction withoxalic acid at 230°C (503 K) and followed by heating gives allyl alcohol. (iii) Glycerol on oxidation with dil. `HNO_3` gives a mixture of glyceric and tartronic acid,
(iv) Glycerol on oxidation with conc. `HNO_3` gives glyceric acid.

Options

A. i and ii
B. i and iii
C. iii and iv
D. I,ii, iii iv

Answer

D