In the arrangement shown in figure $$a_1, a_2, a_3$$ and $$a_4$$ are the accelerations of masses $$m_1, m_2, m_3$$ and $$m_4$$ respectively. Which of the following relation is true for this arrangement?

A

$$4a_1 + 2a_2 + a_3 + a_4 = 0$$

B

$$a_1 + 4a_2 + 3a_3 + a_4 = 0$$

C

$$a_1 + 4a_2 + 3a_3 + 2a_4 = 0$$

D

$$2a_1 + 2a_2 + 3a_3 + a_4 = 0$$