3) Find the product of ( 4a - 5b) ( 16a? + 20ab + 2562).
A. 20a3 - 125b3
C. 20a3 + 125b3
B. 64a3 + 60a2b - 100ab2 + 125b3 D. 64a3 - 125b3

pls answer this i really need it thankyouu in advance