(Q).
This is a correct answer to the following question about Vitamin. Yes or no? Answer: For example, folic acid may carry methyl , formyl , and methylene groups in the cell. Question: how many classes of vitamins
(A).
No

(Q).
This is a correct answer to the following question about Flat roof. Yes or no? Answer: In warmer climes where rainfall is less and freezing is unlikely to occur, many flat roofs are simply built of masonry or concrete and this is good at keeping out the heat of the sun and cheap and easy to build where timber is not readily available. Question: how long is a flat membrane roof good for?
(A).
No

(Q).
This is a correct answer to the following question about Steam (software). Yes or no? Answer: In addition to being a central hub for gaming software, Valve has created a version of Steam with altered functionality to be used in schools for educational software, including a modified version of Portal 2 for teaching science and critical thinking lessons. Question: what is steam by valve corporation
(A).
No