Which of the Following Best Describes the Current Status of the Mountain

Multiple Choice

Which of the following best describes the current status of the Mountain Pass mining operation?

A) The mine remains open despite continued leakage of toxic waste into the surrounding environment.
B) The mine is closed since all europium deposits have been fully mined.
C) The once-leaking pipes that transport wastewater from the mining pits to waste ponds have been reengineered to be leak-proof using carbon nanotubes.
D) A makeover of $1 billion will allow for recycling of wastewater and most chemicals used in mining.
E) The mine is closed after being outcompeted by competition from China.