The rule which permits the jury to infer both negligent conduct and causation from the mere occurrence of certain events is:

Under federal income tax regulations, an individual may not deduct a loss on the sale of residential property unless:

A: The loss exceeds 20% of the individual's adjusted gross income; B: The property was also used for business purposes and showed a profit for the 3-year period immediately preceding the sale; C: The individual shows an additional capital gain which would be offset by the sale; D: The property was bought as an investment and was rented or leased out as such.

State the constraint for intermediate node 4

In setting up the an intermediate (transshipment) node constraint, assume that there are three sources, two intermediate nodes, and two destinations, and travel is possible between all sources and the intermediate nodes and between all intermediate nodes and all destinations for a given transshipment problem. In addition, assume that no travel is possible between source nodes, between intermediate nodes, and between destination nodes, and no direct travel from source nodes to destination nodes. Let the source nodes be labeled as 1, 2, 3, the intermediate nodes be labeled as 4 and 5, and the destination nodes be labeled as 6 and 7. What will be an ideal response?