Based on the macro definition shown below, what is the correct way to execute the macro in a search

Based on the macro definition shown below, what is the correct way to execute the macro in a search string?

A. “convert_sales(euro,€,.79)”
B. ‘convert_sales(euro,€,.79)’
C. “convert_sales($euro$,$€$,$.79$)”

D. ‘convert_sales($euro$,$€$,$.79$)’

Reference: https://docs.splunk.com/Documentation/Splunk/8.0.3/Knowledge/Usesearchmacros