The cash flow statement for Schroder Corporation shows the following information: Net cash provided by operating activities: $100,000 Net cash used by investing activities: $(50,000) Net cash provided by financing activities: $10,000 Cash balance at the beginning of the period: $30,000 The cash balance at the end of the period is:

a. $60,000.

b. $90,000.

c. nil.

d. $190,000.