Some economists argue that the productivity slowdown from mid 1970s to mid 1990s actually didn't happen, but just "appeared" to happen because

A)new environmental laws had passed and forced firms to spend to reduce pollution and this spending did not raise output.

B) services were becoming a more important part of the economy and it was hard to measure increases of output from services.

C) increased spending on health and safety raised worker productivity.

D)A and B.

E) B and C.

Which of the following is NOT an explanation for the revival in the growth of productivity starting in the mid 1990s?

A)Cell phones and wireless Internet access increase worker flexibility.

B)Internet use has increased the efficiency of how firms buy and sell to each other and to consumers.

C)Information and communication innovations are increasingly geared toward improving business processes and not consumer products.

D)Faster computers have sped up data processing.