Hi, I have a question for which the answer is provided but I don't know how it is derived, could you help to explain it step by step please?

The answer is J/L = 4 but I don't understand why.

Thank you in advance!

Recall that Touchie McFeelie's production function for comics books is 0. 1J1/2 1 3/4 Suppose that Touchie can vary both jokes and cartoonists' labor. If old jokes cost $4 each and cartoonists' labor costs $24 per hour, then the cheapest way to produce comics books requires using jokes and labor in the ratio O J/L = 2. O J/L = 6. O J/L = 8. O J/L = 2/3. J/L = 4