qobjects = [ { question: "What is a correct syntax for printing the first 10 rows of a DataFrame?", options: [ "print(df.top(10))", "print(df.display(10))", "print(df.head(10))" ], correct: 2 }, { question: "What is a correct syntax for printing the last 10 rows of a DataFrame?", options: [ "print(df.last(10))", "print(df.display(-10))", "print(df.tail(10))" ], correct: 2 }, { question: "True or False. If number of rows is not specified, the tail() method will return all rows.", options: [ "True", "False" ], correct: 1 } ]