Following is the K-map of a Boolean function of five variables P, Q, R, S, and X. The minimum sum-of-product (SOP) expression for the function is

P̅Q̅SX̅ + PQ̅SX̅ + QR̅S̅X + QRS̅X

Following is the K-map of a Boolean function of five variables P, Q, R

1.	Following is the K-map of a Boolean function of five variables P, Q, R, S, and X. The minimum sum-of-product (SOP) expression for the function is
A.	P̅Q̅SX̅ + PQ̅SX̅ + QR̅S̅X + QRS̅X
B.	Q̅SX̅ + QS̅X
C.	Q̅SX + QS̅X
D.	Q̅S + QS̅
Answer» C. Q̅SX + QS̅X