In Ruby, which method is used to check if an object responds to a certain method?

A. def method_name B. method method_name C. function method_name D. define method_name

A. call B. method C. invoke D. none of the above

A. Exits the method B. Continues the method C. Restarts the method D. None of the above

A. def method(param = value) B. def method(param: value) C. def method(param = default) D. def method(param => value)