During 2019, Ocean Consulting had the following transactions with it clients (customers): On February 1, 2019, the company received cash of $5900 from clients in payment of their account balances as of December 31, 2018. On November 1, 2019, the company received $2900 cash as payments in advance for services to be performed in 2020. The company received a total of $17,500 in cash for services that were performed during 2019. The company sent bills totaling $4900 to clients for services performed during 2019; this amount was unpaid as December 31, 2019. As a result of these transactions during 2019, the firm's stockholders' equity will:

increase by $31,200.

increase by $22,400.

decrease by $28,300.

decrease by $25,300.