Fracking is a technique that involves fracturing underground rock formations and using water at high pressure to release trapped oil and gas. Research has generated some possible solutions to concerns regarding fracking, such as using high density gel or brine for extraction, powering equipment with natural gas and solar power and plugging methane leaks. What is the most likely factor that will determine the acceptance of these solutions? A) the amount of methane extracted B) reduction in the use of freshwater C) impact on the cost of the fracking process D) reduction in the amount of toxic waste produced