A system displaying a hysteresis loop such as a ferromagnet, is a device for storing memory . explain the meaning of this statement.

Question

$\begin{array}{1 1} \text{because it has a record of memory of cycles of magnetization } \\ \text{because of the reversibility of the ferromagnetic substance} \\ \text{because the magnetization of the ferromagnetic substance depends on the magnetizing field} \\ \text{None of the above } \end{array} $