Answer:
Answer is B. an​ increase; no change.
Refer below.
Explanation:
Sara withdraws​ $1,000 from her savings account at the Lucky​ S&L, keeps​ $50 in​ cash, and deposits the balance in her checking account at the Bank of Illinois. The immediate change is​ an increase in M1 of​ $1,000 and no change in M2.