The correct option is C 6
The shopkeeper wants to store oils of capacities 36L and 48L in equal-sized containers.
This is possible if and only if the capacity of each container is a common factor of 36 and 48.
Thus, the number of ways this can be done = the number of common factors of 36 and 48.
Factors of 36 = 1, 2, 3, 4, 9, 12, 18, 36
Factors of 48 = 1, 2, 3, 4, 6, 8, 12, 24, 48
Common factors of 36 and 48 = 1, 2, 3, 4, 6, 12.
⇒ The storing can be done in 6 ways.