&lt;?php$a = 1;if &#40;echo $a&#41;    print &quot;True&quot;;else    print &quot;False&quot;; ?&gt;
A. true
B. false
C. error
D. No output
Answer:A
&lt;?php$a = 1;if &#40;echo $a&#41;    print &quot;True&quot;;else    print &quot;False&quot;; ?&gt;
A. true B. false C. error D. No output
Explanation: echo does not return anything so if condition is empty.