Which contents make a persona useful for product decisions?

• AA name, a photograph, a job title, hobbies and a personal quote
• BThe problem they are accountable for, their evaluation criteria in the order they apply them, their objections and what evidence answers each, where they look for information, and what they risk personally if the purchase goes badly
• CA detailed demographic profile including age, income and education
• DA ranked list of the features they said they wanted