When shortest path between A to C is chosen then which of the following property will increase?

The property which will increase from A to C is Stability.

The most stable allotrope of phosphorus is black. It is composed of layers. The element is present, but in a very heavily polymerized form.

There are two basic ways that black phosphorus is present. The two types of black phosphorus are alpha and beta. Each type of phosphorus has unique features. The most reactive form of phosphorus is called white phosphorus, and it is toxic. White phosphorus is more reactive than red phosphorus, although red phosphorus is not toxic. The least reactive kind of phosphorus is black.