Option (1) is correct: Under Order VII, Rule 11(1)(e) of the Code of Civil Procedure, where the plaint is not filed in duplicate, the court shall reject the plaint.
Option (2) is incorrect: These are irregularities, but the court shall not reject the plaint. These regularities can be cured.
Option (3) is incorrect: These are irregularities, but the court shall not reject the plaint. These regularities can be cured.
Option (4) is incorrect: These are irregularities, but the court shall not reject the plaint. These regularities can be cured.