28. Oil companies in Alberta often ship their oil to international markets through pipelines. Many of these pipelines run through British Columbia, and this in. frastructure has not increased in any significant way since the 1950s. a. As the production of crude oil in Alberta has increased, what has happened to the demand for pipeline use? b. Given your answer to (a), what do you think has happened to the price of moving oil through BC pipelines? c. The cross-price elasticity of pipelines and railroad tanker cars is positive. What is the implication of this for railroad use given your answer in (b)? d. The major argument against pipeline expansion is that increased amounts of oil being shipped in BC ports will lead to oil spills. Given your answer in (c), what is the reciprocal environmental concern of not expanding the pipeline? e. What is the name economists give the response you stated in (d)