Read the text and choose the appropriate answer.
Conversations with the word "OK" can be heard all over the world. This word is used in the USA at least seven times per day. It has replaced the expression "all right" or "alright", which is still used, although far less frequently than it was hundred years ago. The most significant research into the history of "0 Kay" has been done at Columbia University. "OK" was first seen in print in the Boston Morning Post of March 23, 1839. When the editor, Charles Gordon Greene, was interviewed, he said it stood for "all correct", spelled "all korrect".
Which of the following is not true?
The word "OK" is very popular all over the world.
Expression "all right" was more frequently used hundred years ago than it is used now.
Columbia University did research into the history of "OK".
C.G.Greene interviewed the public on the word "OK".
The Boston Morning Post was the first to print "OK".
