&lt;?php$a  =  '12345';print &quot;qwe{$a}rty&quot;;?&gt;
A. qwe12345rty
B. qwe{$a}rty
C. error
D. no output
Answer:A
&lt;?php$a  =  '12345';print &quot;qwe{$a}rty&quot;;?&gt;
A. qwe12345rty B. qwe{$a}rty C. error D. no output
Explanation: {$}dereferences the variable within.