The capsize screening value C is an indicator of sustability

The capsize screening value C is an indicator of sustability for extended offshore

What i can see is that the equation is : C = 5D^(-1/3)B

D diplacement = 22000 lb

C = 5(22000)^(-1/3)B = 0.178B

So, as pe this equation for large values of B value of C is small ,So graph is leaned towards

the x axis. OptionA

Find C for B = 12ft 9inch = 12.8 ft

So, C =0.178B = 2.284 ft

I can\'t see what it is asking to convert value of C into