Find the part of the given sentence that has an error in it. If there is no error, choose 'No error'. Many female mammals, including rabbits and cats, ovulate only when they mate.

Identify the part of the sentence that contains a grammatical error: 'Had I knew the answer, I would have raised my hand.'

Identify the part of the sentence that contains an error: A bigger budget has been set aside for this years marketing campaign in Asia.