The nurse observes the external genitalia of a female client in preparation for inserting an indwelling urinary catheter. At which location should the catheter be inserted? (Mark location on image)

A. Clitoris: This is a highly sensitive erectile tissue and not connected to the urinary system. B. Urethra: This is the correct site for catheter insertion, as it leads directly into the urinary bladder. C. Labia: These are external folds of skin that surround the urethral and vaginal openings, not the site for catheter insertion. D. Vagina: Inserting a catheter here would result in incorrect placement. The vagina is posterior to the urethra.