The column HSP ACCOUNT.TOT ACCT_BAL contains the current balance of a hospital account. The column HSP ACCOUNT ID is the primary key of HSP ACCOUNT Which of the following returns the total of all current account balances? ONE OF THE FOLLOWING (1 PT) A. SELECT COUNT( ) FROM HSP ACCOUNT GROUP BY TOT_ACCT BAL B. SELECT TOT ACCT_BAL, COUNT) FROM HSP_ACCOUNT GROUP BY HSP ACCOUNT ID C. SELECT SUM( TOT ACCT_ BAL) FROM HSP ACCOUNT GROUP BY HSP ACCOUNT ID D. SELECT SUM( TOT ACCT BAL) FROM HSP ACCOUNT