What three key guidelines regarding mail-order sales were established by the Mail or Telephone Order Merchandise Rule of 1993?

The Federal Trade Commission (FTC)originally addressed problems with mail-order sales through the 1975 Mail-Order Rule.The Mail or Telephone Order Merchandise Rule of 1993 amended the 1975 Mail-Order Rule to extend protections to consumers who purchase goods over phone lines,including through computers and fax machines.
The 1993 rule established three key guidelines.First,sellers must ship items within the time promised.If they do not specify a time,the seller is limited to 30 days from receipt of the order.Second,if the seller cannot ship the item within the promised time,the seller must notify the customer in writing and offer an opportunity to cancel.Third,if a customer decides to cancel the order,the seller must refund the customer's money within a specified period of time.