Question 17 1 pts Refer to the figure below, which is "Peru's Production Possibilities Frontier." The y-axis variable is rubies and the x-axis variable is emeralds. One of the things we can conclude from the figure below is: 400 This 360 320 + 280 240% 200 160 - 120 80 - 40 2 7 8 O Peru's opportunity cost of producing 1 emerald is 4 rubies. O Peru has a comparative advantage in producing rubies. O The slope of Peru's PPF is -30. O The slope of Peru's PPF is - 2/3