Transit Company generated net income of $233,412 this year. At year end, the company had accounts receivables of $87,199, inventory of $63,781, and cash of $21,461. It also had accounts payables of $41,369, short-term notes payables of $11,417, and accrued taxes of $6,145. The net working capital of the firm is

a. $117,510

b. $98,082.

c. $69,971

d. $35,872