The Existence of Deposit Insurance Indirectly Led to the U

The existence of deposit insurance indirectly led to the U.S. savings and loan crisis in the 1980s because it:

A) allowed the S & L banks to invest in treasury bills and bonds.
B) allowed the S & L banks to invest in real estate and other risky projects.
C) prevented the S & L banks to invest in real estate and other risky projects.
D) prevented the S & L banks to invest in treasury bills and bonds.