Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-Given that $\mathrm { P } ( \mathrm { A } ) = 0.15 , \mathrm { P } ( \mathrm { B } ) = 0.42$ , and $\mathrm { P } ( \mathrm { A } \cap \mathrm { B } ) = 0.10$ , find $\mathrm { P } ( \mathrm { A } \cup \mathrm { B } )$

A) $0.47$
B) $0.67$
C) $0.37$
D) $0.57$