$(3)$ Which statement is true?

a$.,{}_{\text{s}\text{h}\text{e}\text{l}\text{l}}=\frac{60\text{k}\text{i}\text{p}\text{s}}{1i{n}^2}=60$ksi

b$.,{}_{\text{s}\text{h}\text{e}\text{l}\text{l}}=\frac{60\text{k}\text{i}\text{p}\text{s}}{3i{n}^2}=20$ksi

c$.,{}_{\text{s}\text{h}\text{e}\text{l}\text{l}}={}_{\text{c}\text{o}\text{r}\text{e}}$

d$.,P_{\text{s}\text{h}\text{e}\text{l}\text{l}}=P_{\text{c}\text{o}\text{r}\text{e}}$

e$.{}_{\text{s}\text{h}\text{e}\text{l}\text{l}}={}_{\text{c}\text{o}\text{r}\text{e}}$