Which of the following accurately describes what could cause the Grossman PPF to shrink inwards (as depicted in the graph below) and why? Blue is original PPF, white is new PPF 2. An increase in productive time. This increase in time results in a higher rate of health depreciation, causing the PPF to shrink inward. A decline in productive time. This decrease in time results in a lower rate of health depreciation, causing the PPF to shrink inward. A decline in productive time. This decline results in less resources (time and money) available to produce health (H) and home goods (Z). An increase in productive time. This increase results in more resources (time and money) available to produce health (H) and home goods (Z).