Edwin has three flowers, one red, one blue and one yellow. They have $50$ petals in total. The blue flower has $4$ petals less than the red one and $5$ petals more than the yellow one. How many petals does the red flower have? 
选项为:A:$$12$$  B:$$13$$  C:$$17$$  D:$$21$$  E:$$22$$  请回答其中一个选项.