A firm with a $\_\_\_\_\_\_\_\_$ ratio between value added and sales has brought $\_\_\_\_\_\_\_\_$ of the value$-$creating activities associated with its business inside its boundaries, consistent with a high level of vertical integration.

Question $10$ options:

a$)$

low; many

b$)$

high; many

c$)$

medium; many

d$)$

medium; few