some English practice: Plural or Singular

[Kwfine]

Hi,

I am not sure which of the following sentences are grammatically correct.

A: More than one person are unhappy with this.
B: More than one person is unhappy with this.

C: More than 90% of respondents are unhappy with this.
D: More than 90% of respondents is unhappy with this.

Could you help please?
Thank you.

Kitty
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各位前輩安安, 我是kitty喔!

[Kitosdad]

B & C are correct Kitty.

Kitos.
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If you need me, I'm here.

[Kwfine]

[Kitosdad]

More than one person is unhappy with this.

Kitty, it says more than one , not many, or twenty or .............................

I know it is difficult. It is just one of those things that you learn over time.

Kitos.
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If you need me, I'm here.