What best describes a period of inflation?

Characteristics of inflation are:

Inflation involves a process of the persistent rise in prices. It involves rising trend in price level.

Inflation is a state of disequilibrium.

Inflation is scarcity oriented.

Inflation is dynamic in nature.

Inflationary price rise is persistent and irreversible.

Inflation is caused by excess demand in relation to supply of all types of goods and services.

Inflation is a purely monetary phenomenon.

Inflation is a post full employment phenomenon.

Inflation is a long-term process