Which of the following statements is the MOST$$ accurate?

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Part $1$

A$.$

All versions of Purchasing Power Parity theory explain well the actual data on exchange rates and national price levels.

B$.$

All versions of Purchasing Power Parity theory do badly in explaining the actual data on exchange rates and national price levels.

C$.$

Only absolute Purchasing Power Parity explains well the actual data on exchange rates and national price levels.

D$.$

Only relative Purchasing Power Parity explains well the actual data on exchange rates and national price levels.