At the end of 2014, Lehnhoff Inc. had $75 million in cash. During 2015, the following events occurred: 

Cash flow from Lehnhoff's operating activities totaled $325 million.

 • Lehnhoff issued $500 million in common stock. 

• Lehnhoff's notes payable decreased by $100 million. 

• Lehnhoff purchased fixed assets totaling $600 million. 

How much cash did Lehnhoff Inc. have at the end of 2015? 

Select one:

a. $ 400 million 

b. $1,400 million 

c. $ 100 million 

d. $ 50 million 

e. $ 200 million