问题如下：
Which of the following statements is least described as a negative covenant?
选项：
A.The bond issuer must not violate laws or regulations.
B.The bond issuer must not issue more debt.
C.The bond issuer must not sell assets pledged as collateral.
解释：
A is correct.
Affirmative covenants are administrative actions the issuer must perform, such as complying with all regulations and laws. Negative covenants are restrictions on a bond issuer's operating decisions, such as prohibiting the issuer from issuing additional debt or selling the assets pledged as collateral.
老师，这题问题和解释都看得懂，但是为什么A不属于negative范畴呢？不是禁止的条款吗？禁止违法
