Gray Financial Services, Inc. invested $24,000 to acquire 7,250 shares of Mitt Investments, Inc. on March 15, 2013. This investment represents less than 20% of the investee's voting stock. On May 7, 2017, Gray Financial Services, Inc. sells 2,250 shares for $13,250. When the journal entry to record the sale is made, ________.

a. Gain on Disposal will be credited

b. Long-term Investments-Held-to-Maturity will be debited

c. Long-term Investments-Available-for-Sale will be debited

d. Cash will be credited