You have opportunities that have values in multiple currencies. The currency exchange rate automatically updates. You need to ensure that currency values are accurately reported. When is the new currency exchange rate applied to the opportunity records? 

Answer options:

A. when a change is made to a currency field
B. when a user opens the opportunity record
C. when a user manually recalculates opportunity
D. when the calculate rollup field system job for the msdyn_projectteam entity runs

A