The following table provides data for loan loss reserving on Mercantile banks balance sheet (in millions USD).

	Mar 2019	Jun 2019	Sep 2019	Dec 2019
Loan Assets	5,000	4,990	4,990	4,950
Loan-Loss Reserve, Contra Asset	100	90	100	70
Net Loans	4,900	4,900	4,890	4,880

Using data from the above table, which of the following statements is INCORRECT?

Select one:

a. Mercantile bank has no new write-offs between June and September 2019.

b. Mercantile bank has written off $10 million from its gross loans between March and June 2019.

c. Mercantile bank has written off $40 million from its gross loans between September and December 2019.

d. Mercantile bank has written off $30 million from its gross loans between September and December 2019.