Final answer:
Logan receives 200 units each month from his annuity. This is calculated by dividing the monthly amount of $600 by the value of each unit, which is $3. Hence, option (B) is correct.
Step-by-step explanation:
Logan receives a certain number of units each month from his annuity, where each unit is worth $3, and he is getting $600 every month.
To find out how many units he receives monthly, we divide the monthly amount received by the value per unit.
So, the calculation would be $600 divided by $3 per unit.
$600 ÷ $3 per unit = 200 units
Hence, Logan receives 200 units every month. This corresponds to option B) 200 units.