Which statement will prevent concurrent application processes from performing anything other than read-only operations against a table named TAB1?

Which statement will prevent concurrent application processes from performing anything other than read-only operations against a table named TAB1?
A. LOCK TABLE tab1 IN READ MODE
B. LOCK TABLE tab1 IN SHARE MODE
C. LOCK TABLE tab1 IN EXCLUSIVE MODE
D. LOCK TABLE tab1 IN READ-ONLY MODE

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