Which expression is equivalent to -9x^-1y^-1 / -15x^5 y^-3 assume x = 0 y = 0

For this case we have the following expression:
   -9x ^ -1y ^ -1 / -15x ^ 5 y ^ -3
 For power properties we have:
   -9x ^ (- 1-5) y ^ (- 1 - (- 3)) / - 15
 Rewriting we have:
   9x ^ (- 6) y ^ (- 1 + 3) / 15
   3x ^ (- 6) y ^ (2) / 5
   3y ^ 2 / 5x ^ 6
 
   3y ^ 2 / 5x ^ 6Note: answer is not between the options. Rewrite the expression again, or the options.

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