which of the following ratio is correct for thick sauce?
A. 3 tsp butter: 2 tbsp flour: 1 cup milk
B. 4 tsp butter: 1 tbsp flour: 1 1/2 cup milk
C. 5 tsp butter: 2 tbsp flour: 1 cup milk
D. 8 tsp butter: 4 tbsp flour: 2 cup milk​