A 40 year old male presents with pain on the right flank and hematuria. An abdominal CT reveals a large 8*8 cm size solid mass in the right kidney and 3 * 3cm solid mass occupying the upper pole of left kidney. The most appropriate surgical treatment for this patient is
A: bilateral radical nephrectomy
B: right radical nephrectomy and biopsy of the mass from opposite kidney
C: right radical nephrectomy and left partial nephrectomy
D: right radical nephrectomy only
E: left radical nephrectomy and right partial nephrectomy