What do y'all think about Donald trump ? thoughts or opinions

If you want to compare two different investments, what should you calculate

Nominal gross domestic producta. is a measure of the overall level of pricesb. measures the value of final goods and services produced within the borders of a given country during a given time period using current pricesc. measures the value of final goods and services produced within the borders of a given country during a given time period corrected for changing pricesd. only changes when the level of output changes

Select the word from the list that best fits the definition sometimes