Cash discount 4/20 net 35 by a creditor and the return is 9%

Which statement is true

Approximate cost of taking discount is 58.4% which is very hign

Discount should only be taking if cost of giving up the discount is less than return of 9%

Discount of 4% is less than required return of 9% discount should not be utilized

Cost of giving up discount is higher than the required return should not be used