Regarding technical assistance, which definition is correct according to Carpinetti (2016)? A) The impact on the environment during the production...

Regarding technical assistance, which definition is correct according to Carpinetti (2016)?

A) The impact on the environment during the production, use, and disposal of the product.
B) It is the quality from the point of view of the user's life risk and communication with the product.
C) The user's perception of the product based on their organs.
D) Factors related to the quality (courtesy, etc.) of technical assistance services and customer service (pre, during, and post-sale).
a) A
b) B
c) C
d) D