What will be the output of the following PHP code? <?php $a1 = array_fill(3, 4, "blue"); $b1 = array_fill(0, 1, "red"); print_r($a1); echo ""; print_r($b1); ?>

• A. Array ( [3] =&gt; blue [4] =&gt; blue)
• B. Array ( [4] =&gt; blue [5] =&gt; blue [6] =&gt; blue)
• C. Array ( [3] =&gt; blue [4] =&gt; blue [5] =&gt; blue [6] =&gt; blue )
• D. Array ( [3] =&gt; blue [4] =&gt; blue [5] =&gt; blue [6] =&gt; blue )