Which of the following code segments correctly readies a database query, creating a valid statement...

$sth = $dbh->prep_statement(SELECT * FROM aTable);

$sth->execute_statement;

$sth = $dbh->prepare(SELECT * FROM aTable);

$sth->execute;

$sth = $dbh->prep_statement(SELECT * FROM aTable);

$sth->execute;

$sth = $dbh->prepare_statement(SELECT * FROM aTable);

$sth->execute_statement;