For the following alternatives compute the Delta B/C ratio of Alternative C minus Alternative A. Use 9% as MARR. (Remember for our convention, salvage value is a minus cast.) Initial Investment Annual Benefit Salvage Value Useful Life (years) A $1,000 $350 $300 5 B $2,000 $500 $600 6 C $2,500 $600 $800 7 D $4,000 $650 $2,000 9