When Discussing Health Disparities, Little Information Was Provided on Lesbian

When discussing health disparities, little information was provided on lesbian, gay, bisexual, transgender and other groups marginalized on the basis of their sexual orientation and/or gender identity. The reason for this is

A) It is difficult to pack some much information into one chapter.
B) The health disparities associated with these marginalized identities are radically different than those for people of color.
C) There is little information for people with these marginalized identities much more data is needed to understand which disparities exist.
D) People of color may also be lesbian, gay, bisexual, transgender, etc. The information provided her already includes them.