The correct answer is D. None of these.
A Nil Caution order is a type of order that is used to notify the customs authorities that a shipment is not subject to any import duties or taxes. The order number for a Nil Caution order is always 000000.
Option A, T/A-409, is the order number for a Temporary Admission order. A Temporary Admission order is a type of order that is used to allow goods to be imported into the country for a temporary period of time without paying import duties or taxes.
Option B, T/B-409, is the order number for a Bonded Warehouse order. A Bonded Warehouse order is a type of order that is used to allow goods to be stored in a bonded warehouse without paying import duties or taxes.
Option C, T/C409, is not a valid order number.