What is the correct way to add 1 to the $count variable?Question 30Select one:a.++countb.count++;c.$count =+d.$count++;

How would you add 1 to the variable $count?Select one:a.  incr count;           b.  $count =+1                       c. $count++;  d.  incr $count;

Which of the following is not a valid way to increment a variable in PHP?$var++;++$var;$var += 1;$var =+ 1

Which one of the following is incorrect for variable name?a) new b) sum c) count d) flag e) IF f) ELSE

Which of the following function returns the number of characters in a string variable?A.count($variable)B.len($variable)C.strcount($variable)D.strlen($variable)

What will be the output of the following code?< ?phpfunction track() {static $count = 0;$count++;echo $count ;}track();track();track();?>