What is the correct order to perform different types of tests:

Question $9$Select one:

a$.$

Unit testing, then integration testing, followed by stress testing and finally user acceptance testing.

b$.$

Stress testing, then unit testing, followed by integration testing and finally user acceptance testing.

c$.$

Unit testing, then stress testing, followed by integration testing and finally user acceptance testing.

d$.$

Integration testing, then unit testing, followed by stress testing, and finally user acceptance testing.