The function erf(x)=e dt is called the error function. It is used in the field of probability and cannot be calculated exactly. However, one can expand the integrand as a Taylor polynomial and conduct integration. The approximate value of erf (2.0) using the first three terms of the Taylor series around t = 0 is (A) -0.75225 (B) 0.99532 (C) 1.5330 (D) 2.8586