A start$-$up firm quickly grows beyond its initial capacity to fulfill orders. The firm decides to separate its domestic and international operations. Which example below would the firm likely experience as a drawback to this strategy?

a$.$ It would promote economies of scale.

b$.$ It would complicate the capture of learning$-$curve savings resulting from consolidating production in manufacturing plants around the world.

c$.$ It would develop a common approach to problem solving.

d$.$ It would promote in$-$depth skill development of employees by providing a well$-$defined career ladder.