Which of the Following Statements About the Texas Constitutional Convention

Which of the following statements about the Texas Constitutional Convention of 1865 is FALSE?

A) Texas had to accept the abolition of slavery.
B) Texas had to repudiate the war debt incurred by the state.
C) Texas had to return to the federal government parts of Oklahoma seized by Texas Confederate soldiers.
D) The state had to formally reject the right of secession.
E) There were strong Union and secessionist factions at the convention.