2^(20) + 2^(21) + 2^(22) + ... + 2^(49) + 2^(50) =	Choose the correct option.
A) 2^20(2^(21)-1)  B) 2^20(2^(31)-1)  C) 2^20(2^(28)-1)  D) 2^21(2^(21)-1)  E) 2^21(2^(25)-1)
2^(20) + 2^(21) + 2^(22) + ... + 2^(49) + 2^(50) =   2^(20)*(1+2+4+...+2^(30)) =   2^(20)*(2^(31) - 1)   The answer is 2^20(2^(31)-1).
<result>B</result>
2^(20) + 2^(21) + 2^(22) + ... + 2^(49) + 2^(50) =