I will MAKE THE PERSON BRAINIEST IF THEY CAN HELP ME

All of the following are relate to the European Union today EXCEPT:

a
There has been decrease in trade between European countries.
b
Most E. U. countries use a common currency, the Euro.
c
Some countries like the United Kingdom has been questioning the benefits of the European Union recently.
d
There has been a significant increase in the number of countries in the E. U. over the last 25 years.
e
There has a been an increase in immigration in most European countries.