1. Acme Steel Co. produces 1000 tons of steel. Steel sells for $30 per ton. Acme pays wages of $10,000. Acme buys $15,000 worth of coal, which is needed to produce the steel. Acme pays $2,000 in taxes. Acme's contribution to GDP is
(A) 15000.
(B) 20000.
(C) 30000.
(D) 45000.

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