<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def load_and_check(self, base_settings, prompt=None):
 """Load settings and check them. Loads the settings from ``base_settings``, then checks them. Returns: (merged settings, True) on success (None, False) on failure """

        checker = Checker(self.file_name, self.section, self.registry, self.strategy_type, prompt)
        settings = self.load(base_settings)
        if checker.check(settings):
            return settings, True
        return None, False