Desmond builds a set of towers out of blocks. The table shows the number of blocks in each tower. Tower # 1 2 3 4 5 Number of blocks5 10 20 40 80 Which explicit formula correctly represents the number of blocks, an, in terms of the tower number, n? A. An =n+ 80 B. Ar = 2n +5 C. An = 5(2)7-1 D. An = 10(5)n​