Taxpayer is a sole proprietor owner of a merchandising business. He sells an idle lot located in Baguio City at 10% above cost. Records show the cost of P1,000,000. Zonal value per BIR list is P1,200,000 and the value per local assessor's office is P800,000. Compute the capital gains tax:
a. P6,000
b. P60,000
c. P72,000
d. Not subject to capital gains tax