When examining economic growth rates throughout history,
a. almost no growth occurred prior to 1300 ad and then all countries of the world grew at a rapid pace.
b. it appears that the world experienced consistent growth since records have been kept.
c. the world experienced little to no growth until the industrial revolution, after which all of the world's economies began to experience real economic growth.
d. the world experienced little to no growth until the industrial revolution, after which some economies began to experience real economic growth?