What is the "cash inputs" ?

CFA Level I FRA
#1

I saw a term “_ cash inputs _” in Q48 of Schweser Practice Exam Vo1 Exam2 PM session.

Can anyone tell me what is “_ cash inputs _” ?

#2

When you use cash to pay for something as opposed to credit/debt

#3

"cash inputs is irrelevant in that question…i am assuming it to be inflow of cash from other income…