&lt;?php$4four = 4;$3three = 3;$2two = 2;echo $4four + $3three / $2two - 1;?&gt;
A. 4.5
B. 7
C. 3.5
D. Error
Answer:A
&lt;?php$4four = 4;$3three = 3;$2two = 2;echo $4four + $3three / $2two - 1;?&gt;
A. 4.5 B. 7 C. 3.5 D. Error
Explanation: A variable name can not start with a numeric value.