Nigel and Frank Form NFS, Inc

Nigel and Frank form NFS, Inc. an electing S corporation, by combining the assets of their respective businesses. Nigel contributes $10,000 and assets worth $90,000 (adjusted basis of $60,000) for a 1/3 interest. Frank contributes $90,000 and assets worth $270,000 (adjusted basis of $150,000) for a 2/3 interest. NFS also assumes $60,000 of debt on Frank's assets. What is Frank's basis in his stock?

A) $180,000
B) $220,000
C) $240,000
D) $300,000
E) $360,000