8 C of a C

An hour before lunch, a friend texted me this:

1. 7 D S
2. 9 M of P
3. 8 T of an O
4. 7 C of the W
5. 10 Y in a D
6. 28 D in F
7. 6 S of a H
8. 10 C of a M
9. 7 W of the W
10. 5 F in a F
11. 8 C of a C

I immediately texted her back with, "Ano ‘to? Exam?"

She answered back, "Yeah, nasa team building kasi ako. Help please"

So, I checked the message again and tried to solve it. It was fun. And after solving the puzzle, I texted her back with my answers:

1. 7 Deadly Sins
2. 9 Months of Pregnancy
3. 8 Tentacles of an Octopus
4. 7 Continents of the World
5. 10 Years in a Decade
6. 28 Days in February
7. 6 Sides of a Hexagon
8. 10 Centuries in a Millenium
9. 7 Wonders of the World
10. 5 Fingers in a Fist

The last one was left unanswered. I can’t think of anything anymore.

How about you? Do you know what " 8 C of a C" means?