Postal rates have seen a steady increase since inflation in the 1970s.
Option A
Explanation:
There is an intractable problem with the United States postal service. The agency has been flirting with bankruptcy for five years. The deficit, the legal limit, is 15 trillion Dollars.
The delivery system of mail was established with the government in the United States. Throughout the early years of the country, prices are dependent on the distance between the senders and recipient.
Tariffs held at one cost independent of ranges in the mid-19th century. Rates remained unchanged till 1968, when the price went up by a small amount every couple of years. The rate of any first-class stamps was constant as comparison with the price index rises.