In Newton's Law of Cooling $\frac { d T } { d t } = k \left( T - T _ { m } \right)$

Multiple Choice

In Newton's Law of cooling, $\frac { d T } { d t } = k \left( T - T _ { m } \right)$ the constant k is

A) a constant of integration evaluated from an initial condition
B) a constant of integration evaluated from another condition
C) a proportionality constant evaluated from an initial condition
D) a proportionality constant evaluated from another condition