This type of test has an outcome of TRUE or FALSE

Which of the following is not a valid StringBuilder constructor?

Given the following declarations: ``` StringBuilder buf; StringBuilder buf2 = new StringBuilder(); String c = new String("test"); ``` a. buf = new StringBuilder(); b. buf = new StringBuilder(buf2, 32); c. buf = new StringBuilder(32); d. buf = new StringBuilder(c);

? In the figure above, identify the tool marked by the number 3.

What will be an ideal response?