How Are Intermediate Goods Treated in the Calculation of GDP

How are intermediate goods treated in the calculation of GDP?

A) Their value is not counted separately, but included as part of the value of the final good for which they are an input.
B) Their value is counted separately, and their value is also included as part of the value of the final good for which they are an input.
C) Their value is counted separately, but is not included as part of the value of the final good for which they are an input.
D) They are included only if they are imported.
E) Their value is deducted from the value of final goods and services.