Heather is in her early fifties, single, and earns about $55,000 per year. Her retirement savings are relatively small because she used most of her available funds to pay down the mortgage on her home. She does not want to risk the capital invested. She hired Roberto to prepare a retirement savings plan. Roberto recommended a leveraged investment in a film production tax-shelter and some eastern European equity funds. Five years later, Heather was forced to sell her home to cover losses realized on investments recommended by Roberto. Heather decides to seek damages from Roberto for the negligent performance of duty. To be successful, Heather needs to establish all of the following, EXCEPT: a) Roberto owed her a duty of care. b) Roberto breached that duty of care. c) Roberto violated the Principle of Integrity. d) Roberto's breach of the duty of care caused the damages