(A) ‘all else equal.’
(B) ‘everything affects everything else.’
(C) ‘scarcity is a fact of life.’
(D) ‘there is no such thing as a free lunch.’
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(A) ‘all else equal.’
(B) ‘everything affects everything else.’
(C) ‘scarcity is a fact of life.’
(D) ‘there is no such thing as a free lunch.’