Explanation:

- Option 1: A company can issue redeemable debentures. This is true. Companies often issue these with a fixed maturity date when they will repay the principal amount.

- Option 2: A company can issue debentures with voting rights. This is false. Debentures typically do not carry voting rights as they are debt instruments, unlike shares which can have voting power.

- Option 3: A company can issue convertible debentures. This is true. Convertible debentures can be converted into equity shares at a later date.

- Option 4: A company can buy its own debentures and shares. Generally, a company can buy back its own debentures and shares under specific regulations and circumstances.

Correct Answer: Option 2 (A Company can issue debentures with voting rights)