If Sam and Peter are among 'n' men who are arranged at random in a line, what is the probability that exactly 'k' people stand between them?
a) ( P(k) = /{k}/{n} )
b) ( P(k) = /{2k}/{n} )
c) ( P(k) = /{k}/{n-1} )
d) ( P(k) = /{k}/{n+1} )