The persistent problem of inflation, beginning in the late 1960s, had

The persistent problem of inflation, beginning in the late 1960s, had its causes in all of the following except

(a) The full-scale entrance of the United States into the Vietnam War in 1965
(b) “Oil shocks” in the 1970s
(c) Rising production costs in almost every sector in the economy due to rising energy costs
(d) Rising corporate taxes which raised the cost of doing business

ANSWER

(d)