Early This Spring Researchers Have Recently Discovered That There Is

Early this spring researchers have recently discovered that there is one small remnant population of endangered bluegrass left in a small prairie plot outside of Kansas City. If there are approximately 850 individuals in the cohort, how many individuals can the researchers expect to find alive at the end of the summer, 6 months later?

A) Approximately 1000
B) Approximately 330
C) Approximately 700
D) Approximately 45
E) None of the individuals will be alive 6 months later.