Based on the following table, do you think the Pirates and Steelers are compliments or substitutes, and why? Year Pirates Revenues Steelers Revenues 2003 $22 $32 2004 $26 $28 2005 $25 $29 2006 $24 $30 2007 $12 $18 2008 $15 $15 2009 $12 $18 2010 $13 $17 Substitues because the revenues consistently move in opposite directions. O Complements because the revenues consistently move in the same direction. O Substitutes because the revenues consistently move in the same direction. Complements because the revenues consistently move in opposite directions. O None of the above.