When Collecting a Clean-Catch Midstream Urine Specimen, a Small Amount

When collecting a clean-catch midstream urine specimen, a small amount of urine is voided into the toilet before obtaining the specimen to

A) Remove pathogens from the bladder
B) Ensure the collection of an adequate amount of urine
C) Prevent irritation of the urethra
D) Flush microorganisms out of the distal urethra