You are planning a web application that will allow the user to make dinner reservations for between one and eight guests. Before using the user's entry for number of guests, the program should validate this value by

$$ a$.$ limiting the associated reprompting loop

$$ b$.$ checking its reasonableness and consistency

$$ c$.$ confirming it is of the correct data type and falls within the correct range

$$ d$.$ ensuring that it matches the actual number of guests who will attend