A is not discharged by the change from future liability under the guarantee, though the misconduct of B is in respect of a duty not affected by the later Act
A is discharged by the change from future liability under the guarantee, though the misconduct of B is in respect of a duty affected by the later Act
A is discharged by the change from future liability under the guarantee, though the misconduct of B is in respect of a duty not affected by the later Act
None of these