The simplest equation which implements the K-map shown below is:

• A. <img src="/_files/images/digital-electronics/digital-systems/mca4_1016a1.jpeg">
• B. <img src="/_files/images/digital-electronics/digital-systems/mca4_1016b1.jpeg">
• C. <img src="/_files/images/digital-electronics/digital-systems/mca4_1016c1.jpeg">
• D. <img src="/_files/images/digital-electronics/digital-systems/mca4_1016d1.jpeg">