Which of these is a statement of fact?
A. Animal cardiologist Lynne Nelson has conducted seven
years of fascinating research at WSU's Bear Center.
B. The main mission of WSU's Bear Center is to better
understand bears so that various bear species around the
world can be conserved.
c. Washington State University's Bear Center is one of the
most interesting places for college students to work.
D. Seth Donahue's discovery that bears' cells continue to
produce new bone-making material as the animal sleeps
is significant.