PLS HURRY 100 PINTS PLS I REALLY NEED HELP

Which of the following is a step in simplifying the expression x multiplied by y to the power of 4 over x to the power of negative 5 multiplied by y to the power of 5, the whole to the power of negative 3.?

PLS HURRY 100 PINTS PLS I REALLY NEED HELP Which of the following is a step in simplifying the expression x multiplied by y to the power of 4 over x to the powe class=