Which of the Following Best Describes Nominal GDP

Which of the following best describes nominal GDP?

A) total quantity of goods and services produced by an economic system
B) total value of all goods and services produced within a given period by a national economy through domestic factors of production measured in current dollars or with all components valued at current prices
C) total value of all goods and services produced within a given period by a national economy regardless of where the factors of production are located
D) total value of all goods and services produced within a given period by a national economy through domestic factors of production adjusted to account for changes in currency values and price changes