Each of the 6 friends – A, B, C, D, E, and F wears a different branded shirt among Polo, Reebok, Adidas, Gap, Milan and Lava of six different colours among Red, Blue, Green, White, Pink and Black not necessarily in the same order. C wears a red colour shirt which is neither Polo nor Lava. A wears Reebok shirt which is neither black nor pink in colour. Either E or F wears white shirt. B wears Gap shirt which is not pink in colour. D wears either Adidas or blue shirt. E wears blue shirt which is not Lava.

The Gap shirt is in which colour?