A positive covenant to an indenture or loan agreement would:

• A.set a condition the company must follow such as not pledge any assets to other lenders.
• B.set a condition that the company must follow such as providing regular (periodic) financial statements to the lender.
• C.set a condition that the trustee can eliminate sinking fund payments.
• D.allow the trustee to call the bonds in.
• E.allow the company to pay dividends only semi-annually.