Direction: There are total five departments in a company. There are total 90 employees in Finance department which is 25% of total employees in the company. 2/9 of the total employees of the company are working in HR department. Employees working in Sales department is 25% more than that in HR department. Ratio between employees working in Security and Housing department is 4:5.
Number of employees in Housing department is how much more than number of employees in security department?

Options

A. 10
B. 20
C. 30
D. 40