What is a disadvantage of using a macro filter?

a.) they can only be attached to film cameras.
b.) they can degrade the quality of the image.
c.) they are very expensive.
d.) there are no disadvantages to using one.

Ineed this to be answered fast and you i would appreciate it1. what benefits are there to using an online filter app? 2. of the apps you researched, which would you choose to edit your own photos? why would you choose this app over the other ones? 3. if you could choose between using the camera accessory filters that connect to your camera or the photo editing app filters, which would you choose and why?