ROLE

Evaluate the SQL statement.
CREATE ROLE manager;
CREATE ROLE clerk;
CREATE ROLE warehouse;
CREATE USER john IDENTIFIED BY john123;
GRANT warehouse TO clerk;
GRANT clerk TO manager;
GRANT warehouse TO john;
GRANT manager TO john
/
How many roles will user john have access to?

A. 0
B. 1
C. 2
D. 3

Answer:[D]
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