[Solved] Which of the following is NOT a nonbarbiturate sedative-hypnotic? A) chloral hydrate B) methaqualone (Quaalude) C) secobarbital (Seconal) D) All of the above are nonbarbiturate sedative-hypnotics. Product XXX: This is a placeholder for an unspecified product, often used in examples or hypothetical scenarios. Units: Basic measures or quantities used in statistics or production that signify parts of a whole or individual items. Direct Materials: Raw materials that are directly incorporated into a finished product and can be easily traced to it. Material A: This is a placeholder for a specific type of material, often used in examples or hypothetical manufacturing scenarios.