Lexington Company sells product 1976NLC for $50 per unit. The cost of one unit of 1976NLC is $45, and the replacement cost is $43. The estimated cost to dispose of a unit is $10, and the normal profit is 40%.

At what amount per unit should product 1976NLC be reported, applying lower-of-cost-or-market?
a. $20.
b. $40.
c. $43.
d. $45.