The tensile strength for the plate per pitch length of the outer row of the rivet is ________.

A

$$ p_{t}=\frac{(p-d)t \sigma_ {t}}{2}$$

B

$$ p_{t}=2(p-d)t \sigma_ {t}$$

C

$$ p_{t}=(p-d)t \sigma_ {t}$$

D

$$ p_{t}=2(p-d) t ^{2}\sigma_ {t}$$