Refer to the problem in $19.$ Take the derivative of the market value of TCI under a leveraged

capital structure, with respect to debt $(B),$ set the derivative equal to zero and solve for $B$ to

find the optimal amount of debt of TCI.

a$)$ $$120$ million

b$)$ $$520$ million

c$)$ $$290$ million

d$)$ $$100$ million

e$)$ $$300$ million

MACRS TABLE