In a certain town, 25% of the families own a phone and 15% own a car ; 65% families own neither a phone nor a car and 2,000 families own both a car and a phone. Consider the following three statements : <br> (a) 5% families own both a car and a phone. <br> (b) 35% families own either a car or a phone. <br> (c) 40,000 families live in the town. <br> Then :