J.) Robin Corporation begins the period with a balance in unearned revenue of $300,000 related to unredeemed gift cards. During the period, $800,000 in gift cards are sold and $600,000 worth of gift cards are redeemed. Another $50,000 in gift cards expired during the period and were transferred to revenue. At the end of the period, what is the balance in unearned revenue relating to unredeemed gift cards?

Select one:

a. $450,000

b. $500,000

c. $800,000

d. $1,100,000

e. $1,050,000