GMAT Critical Reasoning (CR) | Re: A significant number of Unitron Corporation’s department heads are due

I was about to choose D when something stuck my mind and I went for C. Here are the 2 choices:

C. reduce the responsibilities of each department
D. have any manager who are currently senior to the department heads appointed as department heads

D is good but I had one possible solution in my mind...that the problem is because of more number of departments and few dept heads...what If the company decides to dissolve existing few departments? In that case, the leftover departments could be taken
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