I Want to Test $H _ { 0 } : p = .7 \mathrm { vs. } H _ { \mathrm { a } } : p \neq .7$

Multiple Choice

I want to test $H _ { 0 } : p = .7 \mathrm { vs. } H _ { \mathrm { a } } : p \neq .7$ using a test of hypothesis. If I concluded that $p$ is $.7$ when, in fact, the true value of $p$ is not $.7$ , then I have made a________

A) Type I and Type II error
B) correct decision
C) Type II error
D) Type I error