What is the main difference between a mock and a stub?This type of question contains radio buttons and checkboxes for selection of options. Use Tab for navigation and Enter or space to select the option.optionAA stub implements just enough behavior for an object under test to execute the test, whereas a mock usually goes beyond by verifying that an object under test calls the mock as expected.optionBA mock provides a very lightweight implementation, which goes beyond just stubbing an object, whereas a stub implements just enough behavior for the object under test to execute the test.optionCA stub object has working implementations but falls short of production usage because it has some limitations$,$ whereas a mock usually goes beyond by also verifying that the object under test calls the mock as expected.optionDA mock provides a very lightweight implementation, which goes beyond just stubbing the object, whereas a stub object is programmed directly in the test by setting expectations in terms of the type and order of the arguments the functions will expect and the responses they will return.