On January 3, Logan Industries deposited $1000000 in cash at Federal Savings Bank. No excess reserves were present at the time Logan made the deposit and the required reserve ratio is 10%. What is the maximum amount by which Federal Savings Bank can increase its lending（）

A. $100000.

B. $1000000.

C. $900000.

心理卫生的"三级预防功能"是指（）

A.向人们提供心理卫生知识，以防止和减少心理疾病的发生

B.尽早发现心理疾患并提供医学与心理学的干预

C.设法减慢慢性精神病人的残疾程度，提高其社会适应能力

D.维护和促进心理健康，提高人类对社会生活的适应和改造能力