Analyze the chart below and answer the question that follows.

A 3-column table with 6 rows. Column 1 has entries Life expectancy at birth, Infant mortality rate, Total fertility rate, Per capita G D P, Education spending, Unemployment rate. Column 2 is labeled Australia with entries 81.81 years, 4.61 deaths per 1,000 live births, 1.78, 41,000 dollars, 4.7 percent of G D P, 5.1 percent. Column 3 is labeled New Zealand with entries 80.59 years, 4.78 deaths per 1,000 live births, 2.08, 27,700 dollars, 6.2 percent of G D P, 6.5 percent.
Data courtesy of the CIA World Factbook

Which of the indicators on the chart above tell(s) us that Australia and New Zealand are highly developed countries?
A.
per capita GDP
B.
unemployment rate
C.
infant mortality rate
D.
all of the above