The Following Data Are for a Series of Increasingly Extensive

Multiple Choice

The following data are for a series of increasingly extensive flood-control projects. For Plan D marginal costs and marginal benefits are

A) $72,000 and $64,000, respectively.
B) $28,000 and $12,000, respectively.
C) $24,000 and $18,000, respectively.
D) $16,000 and $28,000, respectively.