user: Question: What was Marlboro BRM's lowest points by using BRM P160B?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1970.0, 'Bruce McLaren Motor Racing', 'McLaren M14A', 'Ford V8', 1.0]
SQL:

assistant: SELECT MIN("Points") FROM "Table" WHERE "Entrant" = 'Marlboro BRM' AND "Chassis" = 'BRM P160B';