what will be the followings script output php colorlist0 red colorlist1..., PHP Arrays, PHP

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Question:What will be the followings  script output?
 <?php
 $colorList[0] = "red";
 $colorList[1] = "green";
 $colorList[2] = "blue"; 
$colorList[3] = "black";      
echo sizeof($colorList);
 ?>

A 4 strings 
B 4 
C 4 array

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Question:What will be the followings script output? <?php $colorList[0] = "red"; $colorList[1] = "green"; $colorList[2] = "blue"; $colorList[3] = "black"; echo sizeof($colorList); ?>

A 4 strings

B 4

C 4 array

B