N.C. Gen. Stat. § 1-418: Counter affidavits by plaintiff.

If the motion is made upon affidavits on the part of the defendant, but not otherwise, the plaintiff may oppose the same by affidavits, or other proof, in addition to those on which the order of arrest was made. (C.C.P., s. 175; Code, s. 317; Rev., s. 736; C.S., s. 776.)