2. A city is investigating three alternatives for a bridge in downtown. The benefits and costs of alternatives are as follows (Values in $1000): Description Alt. A Alt. B Alt. C Construction cost $2,600 $2,050 $3,400 Annual O&M cost $85 $115 $66 $450 $600 Annual saving on people gas consumption due to $385 impact on traffic Annual effect of business growth in downtown $600 $450 $750 The project life of all alternatives is estimated to be 50 years. Assume all values are estimated based on today's dollar (time zero) and it is estimated to have 6% as average inflation rate over the course of project life. The nominal annual interest rate as MARR is %10. Obtain the most preferred alternative by using the B/C ratio analysis. 2. A city is investigating three alternatives for a bridge in downtown. The benefits and costs of alternatives are as follows (Values in $1000): Description Alt. A Alt. B Alt. C Construction cost $2,600 $2,050 $3,400 Annual O&M cost $85 $115 $66 $450 $600 Annual saving on people gas consumption due to $385 impact on traffic Annual effect of business growth in downtown $600 $450 $750 The project life of all alternatives is estimated to be 50 years. Assume all values are estimated based on today's dollar (time zero) and it is estimated to have 6% as average inflation rate over the course of project life. The nominal annual interest rate as MARR is %10. Obtain the most preferred alternative by using the B/C ratio analysis