Preston, a Luthier, Used to Own a Workshop in the 1750s

Multiple Choice

Preston, a luthier, used to own a workshop in the 1750s where he produced handmade musical instruments of high quality. However, due to technological advances, musical instruments started being mass-produced in factories, and Preston's business began to decline. Given this information, it can be assumed that Preston belonged to the _____.

A) relationship era
B) production era
C) digital revolution era
D) industrial revolution era