问题：

[单选,材料题] What do you know about “carnation”?

请根据下面的短文回答第下面的题目：
People thank their parents、with two days：Mother’s Day，on the second Sunday in May，and Father’s Day，on the third Sunday in June．These days are to show love for parents．They raise their children and educate them to be good people，They give them love and care．
The two days ale celebrated(庆祝)in many different ways．On Mother’s Day，people wear carnations．Wearing a red one means having a living mother．while a white one shows that the mother is dead．It’s also a day when people whose parents are dead visit the cemetery．On these clays families get together at homes as well as in restaurants．They often have outdoor barbecues(烧烤聚会)for Father’s Day．These are days of fun and good feelings．Another tradition(传统)is to give cards and gifts．Children make them in sch001．Many people make their own presents．These are mole valued(宝贵的)than those bought in shops．It’s not the value of the gift that is important，but the love for the parents．Card shops，florists，candy makers，phone companies and other shops do lots of business during these holidays．
Which is not a reason for children to Show love for parents?

A . It only has two kinds of colors．
B . It refers to the clothes people wear on Mother’s Day．
C . It’s a kind of flower showing love and best wishes．