Look at these two schedules. Which ones are serialized? Explain in one sentence. Are

the two schedules equivalent? Explain why or why not in $3$ sentences or less.

Instruction T$1$ T$2$

$1$ READ$($A$)$

$2$ READ$($B$)$

$3$ A$=$A$+$B

$4$ WRITE$($A$)$

$5$ READ$($A$)$

$6$ A$=$A$+0\mathrm{.}5$

$7$ WRITE$($A$)$

Schedule $1$

Instruction T$1$ T$2$

$1$ READ$($A$)$

$2$ READ$($B$)$

$3$ A$=$A$+$B

$4$ READ$($A$)$

$5$ WRITE$($A$)$

$6$ A$=$A$+0\mathrm{.}5$

$7$ WRITE$($A$)$

Schedule $2$