Consider the following statements regarding modern sugarcane cultivation techniques in India:

1. Using bud-chip settlings for planting results in substantial savings of seed cane compared to conventional methods.

2. Single-budded setts show better germination than multi-budded setts.

3. Single-budded setts show better survival in adverse weather compared to setts cut from large stalks.

4. Sugarcane can be raised from settlings derived through tissue culture.

How many of the statements given above are correct?