Columns 1 through 4 of the above table show the marginal utility, measured in utils, which Mr. Jones would get by purchasing various amounts of products A, B, C, and D. Column 5 shows the marginal utility he gets from saving. Assume that the prices of A, B, C, and D are $24, $4, $6, and $18, respectively, and that Mr. Jones has a money income of $106.
a) What is the total number of utils that Mr. Jones will receive in maximizing his satisfaction? __________.