When describing down syndrome, it's important to note that
a. it can be classified as a single-gene disorder
b. it is caused when red blood cells cannot properly form hemoglobin
c. it causes infected males to have low testosterone levels
d. it is usually caused by three copies of chromosome 21

What are the symptoms of trichomoniasis in males? a. painful urination, a dark discharge from thepenis, with no itchingb. painful urination, a dark discharge from thevagina, with no itchingc. painful urination, a clear discharge from the vagina, and some itchingd. painful urination, a clear discharge from thepenis, and some itching