Why should running your unit test suites not take a long time? Choose all reasons that apply.

		Unit tests aren't that important, so less time should be spent on them and more time coding.
		Unit tests suites that take too long to run discourages running the tests, making them less useful
		When running tests in a central location, longer tests can block others from running their tests as well
		Tests that run too long risk slowing down the feedback cycle for developers