Determine the correctness or otherwise of the following $Assertion$ (a) and $Reason$ (r).

$Assertion:$ In direct somatic embryogenesis, embryos are developed without going through callus formation.

$Reason:$ This is possible due to the presence of pre-embryonically determined cells.

1. Both (a) and (r) are true and (r) is not the correct reason for (a)
2. (a) is false but (r) is true
3. (a) is true but (r) is false
4. Both (a) and (r) are true and (r) is the correct reason for (a)