Observation of the Different Components of the Milky Way Galaxy

Observation of the different components of the Milky Way Galaxy indicates that the spiral arms contain very different populations of stars and other material than those in globular clusters.In what way are they different?

A) Globular clusters contain dust and gas and are the only locations where star formation continues in the Galaxy at the present time. The older stars in the spiral arms have no surrounding dust or gas.
B) Spiral arms contain young stars, dust, and gas within which star formation continues, whereas globular clusters contain older star populations, no dust and gas, and no ongoing star formation.
C) Spiral arms contain older, more developed and hence brighter and bluer stars, while globular clusters are composed largely of young, red stars in the early stages of formation and development.
D) Both spiral arms and globular clusters contain about the same populations of stars both young and old, but, in contrast with the spiral arms, the globular clusters contain no dust or gas, no star formation, and no nova explosions.