Query to pull one post per category

I am trying to show one most recent post per category at HOME.

Starting from the Sandbox theme,
I modified to the LOOP as follows,
but it doesn’t work.

<?php
$args = array(
‘type’ => ‘post’,
‘orderby’ => ‘count’,
‘order’ => ‘ASC’,
‘hide_empty’ => 1);
$categories = get_categories($args);
foreach ($categories as $category) {
$options = array(
‘cat’ => $category->Cat_ID,
‘showposts’ => 1,
‘orderby’ => ‘rand’);
$my_query = new WP_Query($options);
while ($my_query->have_posts()) : $my_query->the_post();
?>
//the content
<?php wp_reset_postdata(); ?>

**
I run this locally and
sometime, it shows one post per category as supposed to, but other times,
it shows two posts per category or shows a same post twice, i.e., it behaves erratically.

Please help.