Company B sent us a buying offer, subject to our reply there before July 22. On July 24, we telexed our acceptance to the offer but received no reply. As the market kept going up, we unexpectedly received a telex on August 24 from Company B requesting us to make shipment before the end of August as specified in the offer, or they would reserve the right to the claim against us for compensation. Which of the following statements is true?
A、B had the right to claim for our late shipment.
B、We should make shipment before the end of August.
C、A contract was concluded between B and us.
D、No contract was concluded between B and us.
E、Our acceptance on July 24 was an late acceptance, being invalid without B's confirmation.
F、B's telex on August 24 was a new offer, and we could turn it down.