A database contains a relation R(x) consisting of a set of integers --- i. e, tuples with one integer attribute. Alice, Betty, and Carol are each executing the following transactions: Alice's transaction:

START TRANSACTION;
SELECT sum(x) FROM R;
COMMIT;

Betty's transaction:

START TRANSACTION;
INSERT INTO R VALUES (5);
INSERT INTO R VALUES (15);
DELETE FROM R WHERE x=10;
COMMIT;

Carol's transaction:

START TRANSACTION;
DELETE FROM R WHERE x=5;
INSERT INTO R VALUES (10);
COMMIT;

Before any of these transaction execute, the sum of integers in R is 100, and none of these integers are 5, 10, or 15. If Alice's, Betty's, and Carol's transactions run at about the same time, and each runs under isolation level READ COMMITTED, what sums could be produced by Alice's transaction?