What nude feminin painting was stabbed by a suffragist?

Question: What nude feminin painting was stabbed by a suffragist?

Choices:

Titian’s ‘Venus of Urbino’
Goya’s ‘The Clothed Maja’
Velazquez’s ‘Rockeby Venus’
Manet’s ‘Olympia’

Correct answer:

Velazquez’s ‘Rockeby Venus’