What is the general syntax to invoke a method on an object?

Select all that apply. Which of the following statement(s) is(are) true about the set container?

a. It is an associative container. b. All the elements in a set must be unique. c. A set container is virtually the same as a size container. d. The elements in a set are automatically sorted in ascending order.

What are three ways you can use the square brackets [ ] with an array name?

What will be an ideal response?