Los pesos from different spanish speaking countries are
a. the same
b. different
c. equal in value to the euro
d. equal in value to the dollar

C. equal in value to the euro or  B. different try both

In that case the answer is most likely B because right off the bat the Mexican Peso is way somewhat more valuable then the most other peso from the other South American countries.

Yes it is correct like that is there anything else you need to add ?