Question

fill in the blank question
a calendar year-end reporting period is defined as a (1 / 3 / 12)-month period which ends on (december/january/march) 31st.
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Explanation:

A calendar year aligns with the standard 12-month Gregorian calendar, concluding on the last day of December, which is December 31st.

Answer:

First blank: 12
Second blank: December