here are 5 daisy flower plants. Each daisy flower plants has 7 red flowers. Annavick picked 18 daisy flowers. How many red flowers were left?

1. What are the operations to be used?
A. Multiplication , Addition
B. Multiplication , Subtraction
C. Multiplication, Multiplication
D. Multiplication , Division

2. What is the number sentence for the problem?
A. (5 x 7) – 18 = N
B. (5 x 18) – 7 = N
C. (18 x 7) – 5 = N
D. (5 x 7) – 8 = N