What number goes in the blank line to make this number sentence true?
(8 + 2) × (5 + 1) = 15 × __
A 3
B 4
C 6
D 8
What number goes in the blank line to make this number sentence true?
(8 + 2) × (5 + 1) = 15 × __
A 3
B 4
C 6
D 8