&lt;?php$color1 = &quot;red&quot;;$color2 = &quot;red&quot;;echo &quot;$color1&quot; + &quot;$color2&quot;;?&gt;
A. redgreen
B. red green
C. 0
D. 1
Answer:A
&lt;?php$color1 = &quot;red&quot;;$color2 = &quot;red&quot;;echo &quot;$color1&quot; + &quot;$color2&quot;;?&gt;
A. redgreen B. red green C. 0 D. 1
Explanation: + does not return 1 if the variables are equal.