The strength equation for the rivet in the double riveted joints is given by ________

A

$$P_s = \left(\frac{\pi}{4} d^2 \tau \right)$$

B

$$P_s = 2 \left(\frac{\pi}{32} d^2 \tau \right)$$

C

$$P_s = \frac{\pi}{2} d^2 \tau$$

D

$$P_s = \frac{\pi}{64} d^2 \tau$$