Derive the Boolean expression for the logic circuit shown below:

• A. <img src="/_files/images/digital-electronics/digital-fundamentals/mca4_0090a.gif">
• B. <img src="/_files/images/digital-electronics/digital-fundamentals/mca4_0090b.gif">
• C. <img src="/_files/images/digital-electronics/digital-fundamentals/mca4_0090c.gif">
• D. <img src="/_files/images/digital-electronics/digital-fundamentals/mca4_0090d.gif">