Where can I find the data values in Option Sets?

Hi everyone

I'm very new to Dynamics 365, so please forgive me if this is a silly question.

I've output our Contacts table which includes the fields sic_maritalstatus, si_type and sic_gender as shown on the attached image. As you'll see, the Marital Status (usually either Single or Married) is shown as a numeric value. This is the same for the Type and Gender fields.

All these fields are based on Option Sets within CRM, and I assume that a table / entity must exist which has these codes alongside their text values (e.g. 907510002 = Married etc).

Where would I find this table / entity, or is it in a different place for each set up of Dynamics? Am I able to find out from within Dynamics itself?

Many thanks
Jon