In General,when We Compare the Mass of a Galaxy or Cluster

In general,when we compare the mass of a galaxy or cluster of galaxies to the amount of light it emits (that is,when we look at it mass-to-light ratio) ,we expect that

A) the higher amount of mass relative to light (higher mass-to-light ratio) ,the lower the proportion of dark matter.
B) the higher the amount of mass relative to light (higher mass-to-light ratio) ,the greater the proportion of dark matter.
C) the amount of light should be at least one solar luminosity for each solar mass of matter (mass-to-light ratio less than or equal to 1) .
D) the higher the amount of mass relative to light (higher mass-to-light ratio) ,the older the galaxy or cluster.