Theodor Fechner's Law, Previously Referred to as Weber's Law, Can

Theodor Fechner's law, previously referred to as Weber's law, can be described as

A) a theory whereby psychological and physical experiences are proposed to be distinct.
B) a mathematical law that describes the relationship between the physical world and a human's subjective experience of that world.
C) a mathematical law that examines the relationship between an individual's jnd and the average jnd of that person's peers.
D) Fechner's attempt to provide a mathematical solution to the mind-body problem.