Answer and Explanation:
As per the data given in the question,
a) Cash A/c Dr. $728,352
To unearned subscription revenue A/c. $728,352
($27×26,976)
( Being receipt of subscription is recorded)
b) Unearned subscription revenue A/c Dr. $60,696
To subscription revenue A/c. $60,696
($728,352÷12)
( Being sales revenue is recorded)
c) Unearned subscription revenue A/c Dr. $182,088
To subscription revenue A/c. $182,088
($728,352×3÷12)
( Being sales revenue in first quarter is recorded)