If yield goes up by $10\%$ at the same time as total manufacturing costs go down by $10\%,$ the Quality Productivity Ratio $($QPR$)$ will:

A$)$ Remain unchanged

B$)$ Go down by $20\%$

C$)$ Go up by $20\%$

D$)$ Go down by approximately $22\%$

E$)$ Go up by approximately $22\%$