Why inventory increase doesnt affect working capital

This is the question i came across in BPP revision book:

Gorwa Co’s working capital is most likely to increase in which of the following situations?

a/ Payments to suppliers are delayed
b/ The period of credit extended to customers is reduced
c/ Non-current assets are sold
d/ Inventory levels are increased

The answer is C and the explaination is ” other situations have limit or no effect on working capital”.

My question is why the increase of inventory level doesnt affect working capital? Because clearly based on the formula ” Working capital= Receivables + Cash + Inventory – Payables” inventory increase will result in higher working capital.

Thank you in advance for giving me a help.