GENUS plc$,$ an agricultural firm, values the pigs in its pure line herds, which are the repository of its proprietary genetics, as a single unit of account. It does this using a discounted cash flow model with cash flow earned from the herds' future outputs calcula$$ed at current prices. Which valuation technique is being used?

Select one:

a$.$ Cost approach

b$.$ Market approach

c$.$ Income approach

d$.$ Level $1$

e$.$ Level $2$

f$.$ Level $3$