&lt;?php$color1 = &quot;1&quot;;$color2 = &quot;1&quot;;echo &quot;$color1&quot; + &quot;$color2&quot;;?&gt;
A. 11
B. 2
C. 0
D. 1
Answer:A
&lt;?php$color1 = &quot;1&quot;;$color2 = &quot;1&quot;;echo &quot;$color1&quot; + &quot;$color2&quot;;?&gt;
A. 11 B. 2 C. 0 D. 1
Explanation: + can be used to add to integer values which are enclosed by double-quotes.