To produce seeds, plants must first produce flowers. Two kinds of tarragon plants, Russian tarragon and French tarragon, look very similar except that Russian tarragon produces flowers and French tarragon does not. The leaves of Russian tarragon, however, lack the distinctive flavor that makes French tarragon a desirable culinary herb. If the information presented is true, which of the following can most reliably be concluded on the basis of it? ['The flowers of Russian tarragon plants are probably not flavorful.', 'There are no other kinds of tarragon besides Russian tarragon and French tarragon', 'Garden plants that have flavorful leaves generally do not produce flowers.', 'Plants that grow from seeds sold in a packet labeled "tarragon" are not French tarragon.']