Two separation columns in sequence are used to separate the components of a feed consisting of 25% benzene (B), 55% toluene (T), and remaining xylene (X). The analysis of the overhead stream from the first column yields 90%B,4.54%T, and remaining X. The second column is designed to recover 90% of the toluene in the original feed in its overhead stream at a composition of 0.946 . The bottoms at the second column are intended to contain 90% of xylene in the original feed at a composition of 0.776 . Compute the composition of benzene at bottom at the second column. A. 0.041 B. 0.035 C. 0.051 D. 0.069