A French user has installed the French language pack, but currencies are still being displayed with a leading '$' sign in spreadsheets. Which of the following must be done to fix this?

Locale settings dictate regional formats for currency, numbers, dates, and language. Even with a French language pack installed, if the `LC_MONETARY` or overall `LANG` locale isn't set to a French-specific locale, the currency symbol might default to a generic or system-wide setting. Altering the locale variables ensures the correct currency symbol is used.

Setting the timezone correctly affects time display, not currency symbols or other locale-specific formatting.

There is no standard `/etc/currency` file in Linux that directly controls the currency symbol for applications like spreadsheets; locale settings are the primary mechanism.

Reinstalling the language pack is unlikely to fix the issue, as the language pack provides the translations, but the active locale configuration determines how those translations and regional formats are applied.