54×5357=\frac{5^4 × 5^3}{5^7}=5754×53= A1B58C25D5Answer: A. 1 Read Explanation: am×an=am+na^m\times{a^n} = a^m+nam×an=am+n54×5357\frac{5^4 × 5^3}{5^7}5754×53=54+357=\frac{5^{4+3}}{5^7}=5754+3=5757=\frac{5^7}{5^7}=5757=1=1=1 Read more in App