What is the principal reason that continuous testing is necessary in the agile world?

A.
So that multiply teams can get better utilization out of testing environments.

B.
To bridge the gap between slow and fast speed IT development.

C.
It supports the large volume and high frequency of changes driven by cloud native development
approaches.

D.
To ensure application interoperability across public cloud providers.

Explanation:
https://en.wikipedia.org/wiki/Continuous_testing