Choose the sentence that is punctuated correctly.
A.
Last night we promised that we would return to the campsite next summer, but our endeavor to fold the tent the next morning made us think twice about it.
B.
Last night we promised that we would return to the campsite next summer; but our endeavor to fold the tent the next morning made us think twice about it.
C.
Last night we promised we would return to the campsite next summer but our endeavor to fold the tent the next morning made us think twice about it.
D.
Last night; we promised we would return to the campsite next summer, but our endeavor to fold the tent the next morning made us think twice about it.
C.
Last night we promised we would return to the campsite next summer but our endeavor to fold the tent the next morning made us think twice about it.