If a Star Is Described as Being in the Constellation

If a star is described as being in the constellation Leo, a modern astronomer knows that it is:

A) somewhere in a particular region of sky having definite boundaries.
B) in a distant galaxy located in a particular direction from Earth.
C) inside a region of the sky bounded by two lines of right ascension in the sky.
D) one of a few individual bright stars that make a picture (of a lion) in the sky.