[Solved] What are the three categories of business-to-business purchase decisions? Define each one. Black Lingerie: Clothing items designed to be worn under other clothing, typically in black color, often associated with sensuality or eroticism. DSM-5: The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, a standardized classification and diagnostic tool used by mental health professionals in the United States and other countries. Frotteurism: A paraphilic interest where sexual arousal is obtained from rubbing against a non-consenting person. Nonconsenting Person: An individual who has not given permission or agreement to participate in an activity, often used in contexts involving sexual activity or research.