What is cheaper?

A) The government building an entire logistical supply and warehousing chain across the country for groceries to support food welfare. Cold food, meat, spoilage & waste, a bunch of federal jobs.

or

B) The government gives citizens a bit of money, which they then spend at existing warehouses (with existing logistical supply chains) to buy food. Some existing warehouses will accumulate larger shares of this money, as it has more customers.

The existing warehouses in example B are called grocery stores, like Walmart.