After the Death of Her Husband,Miriam McAllister Became the CEO

After the death of her husband,Miriam McAllister became the CEO of a company that is the world's leading manufacturer of kidney dialysis machines,and she encouraged its expansion into other hospital services.McAllister has almost doubled her company's revenues since she took control.Consider the studies of managers who fail (derailers) and managers who climb the organizational hierarchy (arrivers) .What quality did McAllister,as an arriver,likely exhibit?

A) an inability to adapt her management style to what was needed by her subordinates
B) sensitivity to others
C) coldness/aloofness
D) over-ambition