Write a function that takes a number of rows, a number of columns, and a string and returns a two-dimensional array of the dimensions specified where each element is the string given. Sample run: mat = fill_str(4, 2, "2D​") print(mat) Prints the following: [['2D', '2D'], ['2D', '2D'], ['2D', '2D'], ['2D', '2D']]

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.