7. The car dealer who sold me my car gave me an excellent price and a three-year ______.(A) utilization (B) warranty (C) replacement (D) exchange

11. Because many hackers now are sophisticated financial criminals, their programs are more likely to mutate ______ the signature they leave on one person's computer might look nothing like the signature left on someone else's machine. (A) as quickly as (C) as quickly as possible (B) so quickly that (D) so quickly for