Sister´ or Sister´s room

Hello! :-)

Translate into English: "La habitación de mi hermana no es muy bonita"
a) room´s sister is not very nice
b) My room´s sister is not very nice
c) My sister´ room is not very nice
d) My sister´s room is not very nice

Well if you don´t know Spanish don´t worry I just want to know why is the D option and not the C option.

If you have more than one sister in that room... how do you say or is the same?

I though that C was singular and D was plural.

Thank you very much :)

You need to study how the possessive is used in English.

For a singular noun (like "sister"), we add apostrophe s ("sister's").

For a plural noun ending in s, we just add an apostrophe. (If you had more than one sister sharing a room, it would be your sisters' room.)

Quote:

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For a singular noun (like "sister"), we add apostrophe s ("sister's").

For a plural noun ending in s, we just add an apostrophe. (If you had more than one sister sharing a room, it would be your sisters' room.)

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Thank you for the answer, 100% clear.

Quote:

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You need to study how the possessive is used in English.

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In my opinion this is not necesary, if I ask is because I´m not sure, obviously if I knew everything i would not ask...

I mentioned it because you seemed to have a confusion between the plural and the possessive. I didn't mean to ruffle your feathers.

Sisters= plural
Sister's = singular possessive

Thanks again, I studied this kind of things long time ago in school and now is difficult try to remember them :)