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【单选题】
Which of the following, if true, would most weaken the authors assertion that, in the 1970s, corporate response to federal requirements(lines 23 — 24)was substantial?A.
Corporate contracts with minority-owned businesses totaled $ 2 billion in 1979.
B.
Between 1970 and 1972, corporate contracts with minority-owned businesses declined by 25 percent.
C.
The figures collected in 1977 under-represented the extent of corporate contracts with minority-owned businesses.
D.
The estimate of corporate spending with minority-owned businesses in 1980 is approximately $ 10 million too high.
E.
The $1.1 billion represented the same percentage of total corporate spending in 1977 as did $ 77 million in 1972.
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