Which of the Following Statements Is Most Accurate

Which of the following statements is most accurate?

A) A rise in the size and frequency of country-specific disturbances to the joining country's product markets raises the critical level of economic integration at which the exchange rate area is joined.
B) A rise in the size and frequency of country-specific disturbances to the joining country's product markets lowers the critical level of economic integration at which the exchange rate area is joined.
C) A decline in the size and frequency of country-specific disturbances to the joining country's product markets raises the critical level of economic integration at which the exchange rate area is joined.
D) A rise in the size and frequency of country-specific disturbances to the joining country's product markets has no effect on the critical level of economic integration at which the exchange rate area is joined.
E) A decline in the size and frequency of country-specific disturbances to the joining country's product markets does not affect the level of economic integration at which the exchange rate area is joined.