Where did a massacre of thousands of Armenians occur during the Countercoup of 1909?

a. Yerevan
b. Istanbul
c. Adana
d. Gallipoli

I know it's not b, i cant seem to figure it out

4 answers

https://en.wikipedia.org/wiki/Armenian_Genocide#Adana_massacre_of_1909
thank you.
You're welcome.
its C just took the test