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.
- Both (a) and (r) are true and (r) is not the correct reason for (a)
- (a) is false but (r) is true
- (a) is true but (r) is false
- Both (a) and (r) are true and (r) is the correct reason for (a)