Refer to the sequence below. What is the isolation level of transaction E$?$

session begins

SET GLOBAL TRANSACTION

ISOLATION LEVEL SERIALIZABLE;

session ends

session begins

SET SESSION TRANSACTION

ISOLATION LEVEL REPEATABLE READ;

transaction A

transaction B

SET TRANSACTION

ISOLATION LEVEL READ UNCOMMITTED;

transaction C

SET TRANSACTION

ISOLATION LEVEL READ COMMITTED;

transaction D

transaction E

session ends

Group of answer choices

Read uncommitted

Read committed

Repeatable read

Serializable