What isolation level must application APP_B use?

Application APP_A is performing updates to table TAB1 using the cursor stability (CS) isolation level. If application APP_B wants to retrieve all rows from table TAB1 without waiting for application APP_A to finish making updates, what isolation level must application APP_B use?
A. Read Stability (RS)
B. Repeatable Read (RR)
C. Uncommitted Read (UR)
D. Cursor Stability (CS)

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