A is the owner of a strip mine. Part of the strip mine area includes a water-filled quarry (known to many as "the pit") and for a number of years many persons have come from surrounding areas to dive into and swim in the quarry's 35 to 55 feet deep water. Although A knew that the pit was being used in this manner, no signs prohibiting trespassing or warning of the dangers of diving or swimming have ever been posted, nor have any barricades ever been placed around or near the pit. A did consider erecting a six-foot high steel chain-link fence with steel posts set in concrete, at a cast of $15,000 to 520,000. Although he was informed and concluded that the fence would have effectively barred persons from using the pit, A decided against building the fence. A few weeks after A decided that the fence would not be built, B, a 14-year-old teenager, dove into the pit. His head struck the pit's sand bottom and Bs neck was broken; he is now a quadriplegic. Apply Judge Hands Caroll Towing negligence formula to the foregoing facts, Is B < PL? Did A breach his duty of care (Le