The simplified form of is ________.

• A. <img src="/_files/images/digital-electronics/digital-systems/fba4_1015a1.jpeg">
• B. <img src="/_files/images/digital-electronics/digital-systems/fba4_1015b1.jpeg">
• C. <img src="/_files/images/digital-electronics/digital-systems/fba4_1015c1.jpeg">
• D. <img src="/_files/images/digital-electronics/digital-systems/fba4_1015d1.jpeg">