&lt;?php$x = 5;$y = 10;$z = &quot;$x + $y&quot;;echo &quot;$z&quot;;?&gt;
A. 15
B. 10 + 5
C. $z
D. $x + $y
Answer:A
&lt;?php$x = 5;$y = 10;$z = &quot;$x + $y&quot;;echo &quot;$z&quot;;?&gt;
A. 15 B. 10 + 5 C. $z D. $x + $y
Explanation: Variable z will store 10 + 5 because 10 + 5 is given in double-quotes.