Suppose That Astronomers Discover an Error in Our Understanding of Cepheid

Multiple Choice

Suppose that astronomers discover an error in our understanding of Cepheid variable stars,such that stars of a given oscillation period have a smaller luminosity than previously assumed.How would that change the estimated distances to other galaxies?

A) The distance estimates would not change.
B) The distance estimates would have greater variation.
C) The distance estimates would become larger.
D) The distance estimates would become smaller.