bcbc $2024$: What is the maximum flame spread limit for an exposed surface within the habitable area of a dwelling?

Question $38$ options:

a$)$

$200$

b$)$

$25$

c$)$

$150,$ except that $200$ is permitted for walls and ceilings in bathrooms.

d$)$

All surfaces are required to have a maximum $150$ flame spread limit$.$