A 4-variable AND-OR-Invert circuit produces a 0 at its Y output. Which combination of inputs is correct?

• A. <img src="/_files/images/digital-electronics/digital-fundamentals/mca5_0040a.gif">
• B. <img src="/_files/images/digital-electronics/digital-fundamentals/mca5_0040b.gif">
• C. <img src="/_files/images/digital-electronics/digital-fundamentals/mca5_0040c.gif">
• D. none of the above