Упростите: (2ab⁵)⁴×(5a⁷b²)² A. 80a¹³b²⁴; B. 400a¹⁸b²⁴ C. 250a¹⁸b¹³; D. 400a¹³b²⁴
16а^4b^20x25a^14b^4=400a^18b24