Combining filter, mutate, and arrange In this exercise, you'll combine all three of the verbs you've learned in this chapter, to find the countries with the highest life expectancy, in months, in the year 2007. - In one sequence of pipes on the gapninder dataset: for observations from the year 2007. - mutate() to create a column LifeExpMonths . calculated as 12 LifeExp , and - arrange ( ) in descending order of that new column Show Answer (-70 XP) Incorrect Submission Have a look at the highlighted code in the editor. Don't forget to close this parenthesis