A pocket veto results if:

A) the president does not send a bill back to Congress within ten congressional working days.
B) the president sends a bill back to Congress after rejecting just one item in the bill on the grounds of constitutionality.
C) Congress overrides a presidential veto with a two-thirds vote by the members present in each chamber within ten congressional working days.
D) the president refuses to sign a bill and Congress adjourns within ten working days after the bill has been submitted to the president.
E) Congress revises a bill after a presidential veto and the president approves the revised bill within ten congressional working days.

D