The kelso building costs 84.5 million to build, the jones building costs 33.8 million
 which statement is true?
 a. jones cost 1/2 the cost of kelsos
 b. jones cost 2/3 the cost of kelsos 
 c. kelsos cost 2 1/2 times the cost of jones
 d. kelsos cost 3 1/2 times the cost of jones