TB MC Qu$.12-29$ Analysis of past monthly movements in$...$

Analysis of past monthly movements in Walmart's stock price has produced the following estimates: $=-\mathrm{.}40$ percent and $=0\mathrm{.}70.$ If the market index

subsequently rises by $5\mathrm{.}00$ percent while Walmart's stock price rises by $3\mathrm{.}30$ percent, what is the abnormal change in Walmart's stock price?

Multiple Choice

$-0\mathrm{.}40$ percent

$+0\mathrm{.}20$ percent

$+0\mathrm{.}80$ percent

$+3\mathrm{.}50$ percent