Match the ions given in Column I with their nature given in Column II.

Column I
(Ions)

 
Column II
(Corresponding nature)

 
A. I. Stable due to resonance
B. II. Destabilised due to inductive effect
C. III. Stabilised by hyperconjugation
D. IV. A secondary carbocation

Codes:

Options:  A   B   C   D 
1. I,II  II II III,IV
2. I II,IV  III  IV
3. I  IV III  II
4. IV I III II