问题：
[单选题]The legal nature of Company B`s reply on July 3rd is:
A、 A valid acceptance, because the acceptance was made before the expiration
B、 An invalid acceptance, because the duration of the offer has lapsed and Company A expressed objection immediately
C、Does not constitute an acceptance, because the offer was revoked
D、A valid acceptance, because normally the letter could have reached Company A before the offer’s expiration date, and Company A did not ground its objection on the delay of acceptance immediately.
