oh. it's an essay. not multiple choice. Hmmm. Well, I have liked the U Q-10. It seems very clean, tastie and adds a nice texture to the Iridesca. I have missed it and am looking forward to having more soon. I love how revved I feel when I take the combination of the two. I simply start singing, just because. No one is hurt in the process because I am at home, in the kitchen, with Katie Cat & the plants. And my legs feel like they have more strength and energy. Nice.