The velocities of \( A \) and \( B \) are marked in the figure-1.130. The velocity of block \( C...

The velocities of \( A \) and \( B \) are marked in the figure-1.130. The velocity of block \( C \) is (assume that the pulleys are ideal and string inextensible):
(A) \( 5 \mathrm{~m} / \mathrm{s} \)
(B) \( 2 \mathrm{~m} / \mathrm{s} \)
(C) \( 3 \mathrm{~m} / \mathrm{s} \)
(D) \( 4 \mathrm{~m} / \mathrm{s} \)