______ nation has declared nationwide emergency after suicide bomb blasts ripped through its churches and luxury hotels on the occasion of Easter on April 21, 2019 ?

a) India
b) Pakistan
c) New Zealand
d) Sri Lanka

Sri Lankan President Maithripala Sirisena would be declaring a nationwide emergency from the midnight on April 22, 2019 following the suicide bomb blasts at churches and luxury hotels on Easter Sunday that killed 290 people and wounded more than 500, his office said.