Which of the following statements about a caveat is TRUE?

1. (1)A caveat may be used for 3 months without removal to protect a claimed interest in land.
2. (2)A caveat is not of itself a cause of action or an interest in land.
3. (3)It is usual to register a certificate of pending litigation before a caveat.
4. (4)The use of a cave at is a good way to tie up any further dealing in land regardless of the validity of the underlying claim.