Answer:
B
Step-by-step explanation:
45: indeed, 45 is a multiple of itself, since 45 is evenly divisible by 45 (we have 45 / 45 = 1, so the remainder of this division is indeed zero) 90: indeed, 90 = 45 × 2. 135: indeed, 135 = 45 × 3. 180: indeed, 180 = 45 × 4.
