Subject :IMO Class : Class 7

In a test, 4 marks are given for every correct answer and –2 marks, for every incorrect answer. Asha answered all the questions and scored 26 marks though she got nine correct answers. Varun also answered all the questions and scored 2 marks though he got five correct answers. How many questions did each answer incorrectly?

A 10, 8

B 9, 18

C 5, 9

D 4, 10

please explain the solution