材料：If，by reason of or in compliance with any such directions or recommendations，the vessel does not proceed to the port or ports named in the Bill of Lading or to which she may have been ordered pursuant thereto，the Vessel may proceed to any port as directed or recommended or to any safe port which the Owners in their discretion may decide on and there discharge the cargo．Such discharge shall be deemed to be due fulfillment of the contract of affreightment and the Owners shall be entitled to freight as if discharge had been effected at the port or ports named in the Bill of Lading or to which the Vessel may have been ordered pursuant thereto．
问题：If the vessel does not, under the directions of the Charterer, proceed to the port or ports named in the Bill of Lading or to which she may have been ordered pursuant thereto to, she may proceed to all the following ports except ______ ．
A.any port as directed
B.any port as recommended
C.any safe port which the Owners in their discretion may decide on
D.the port or ports of origin
At the substituted port, the carrier is entitled to ______ freight if he had dilivered full cargo there．A.full freight
B.half freight
C.no freight
D.reasonable freight
The contract of affreightment is referred to ______ ．A.a contract of carriage by which the carrier is entitled to carry certain amount of cargo in a specified time by any vessel or vessels either belonging to himself or to others
B.a contract of carriage, such as Gencon
C.a contract of trade
D.a contract of sales
This is a ______ ．A.a clause of a contract
B.an explanation of a clause in a contract
C.a requirement from a government
D.an article of an international convention
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