Which is the most suitable mathematical operation to be used to solve this question?

Ron has 10 carrots and 5 cucumbers, he wants to divide the food among all of his rabbits so each rabbit will have the exact same amount of carrots and cucumbers, how many carrots/cucumbers will each rabbit have?

A) LCM
B) GCF
C) Subtraction

Which is the most suitable mathematical operation to be used to solve this question?

Two neon lights are turned on at the same time. One blinks every 4 seconds and the other blinks every 6 seconds. How long will it take for both lights to blink together?

A) LCM
B) GCF
C) Subtraction