Which of the following could indicate a Denial$-$of$-$Service $($DoS$)$ attack on your company server?

Select one:

$$ a$.$ Customers are required to enter personal information as they complete an order form.

b$.$ Customers are receiving too many emails about special offers.

$$ c$.$ Customers cannot view the website on their devices because the page will not load.

$$ d$.$ Customers cannot download the most recent newsletter.