Min and Max Combined

How many comparisons are required to find the minimum and maximum elements of an unsorted array when we combine the determination?

Connect the case to the right answer. Please, include the explanation for your choice.

Best case A) 4n/2

Average case B) 3(n - 1)/2

Worst case C) 2(n - 1)/2

D) 4(n - 1 )/2

E) 4(n + 1)/2

F) 2n/2

G) 3n/2

H) 3(n+1)/2

I) 2(n+1)/2