Which of the following product categories has seen the greatest increase in exports to the European Union since the signing of the agreement, according to official trade statistics from the last six years?

a) Automobiles (HS Code: 8703) due to increased demand for European-made cars
b) Electronics (HS Code: 8542) driven by advancements in technology and innovation
c) Pharmaceuticals (HS Code: 3004) owing to an aging population and rising healthcare needs
d) Agricultural products (HS Code: 1001) as a result of favorable trade policies and increased agricultural productivity