Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

Q: Question: When someone says I stand corrected. What does that mean? 
Answer: It means "I admit that I was wrong". See e.g. Cambridge Dictionaries: used to admit that something you have said or done was wrong I stand corrected - the date of foundation was 1411, and not 1412 as I had written. Or Wiktionary: Said to acknowledge someone who corrects something that one says or writes that was not correct. The Battle of Hastings was fought in 1056. No it wasn't! Look in the textbook! Oh, sorry. I stand corrected - it was fought in 1066. Note that the Cambridge Dictionary marks this idiom as "formal", and Merriam-Webster's Learner's Dictionary as "somewhat formal".

A: yes
****
Q: Question: I understand the capitalization rule for nouns, proper nouns require a capital letter. Also, I should begin a new sentence with a capital letter. When & why "mom/dad" requires a capital letter ? (Reference- ELL- I am at Vapi where mom is hospitalised) mom: (n) informal term for a mother/North American term for mum. 
Answer: We should capitalize these words if they are being used as the name of the person. You can capitalize these when referring to your own relatives: Hello, Mother. When you use mom/dad in general meaning father/mother, it's a common noun. So do not capitalize them when they follow possessive pronouns such as her, his, my, our, your. (my mother ~ my mom ) A good rule to follow is to capitalize them if they are used as proper nouns. (dictionary.com).

A: no
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Q: Question: A simple question that has sparked some debate, and I couldn't find a concrete answer anywhere. There seems to be two camps: The word plethora indicates plural, so therefore it should be "There are a plethora"; and the other camp says that there is only one plethora (which contains multiple), so it should be "There is a plethora". I've seen many examples of both. Is there a consensus, or is it just one of those things that can go either way? 
Answer: A plethora is singular, so one must say "there is a plethora of..." just as one would say "there is a bunch..." If you are dealing in several plethoras, you could use the plural: "there are plethoras of..." but this feels very contrived and artificial.

A:
yes
****