A switching function f (A, B, C, D) = A B CD + A BC D + A BCD + AB C D + AB CD can also be written as

A switching function f (A, B, C, D) = A B CD + A BC D + A BCD + AB C D

1.	A switching function f (A, B, C, D) = A B CD + A BC D + A BCD + AB C D + AB CD can also be written as
A.	m (1, 3, 5, 7, 9)
B.	m (3, 5, 7, 9, 11)
C.	m (3, 5, 9, 11, 13)
D.	m (5, 7, 9, 11, 13)
Answer» C. m (3, 5, 9, 11, 13)