The Supreme Court today asked aerated drink makers Pepsico and Coca Cola to file their replies within six weeks on the N K Ganguly Committee report, which concluded that cola drinks contained pesticide residues.A bench, headed by Justice A K Thakker, which was hearing a public interest litigation by a civil society group - Centre for Public Interest - also directed the NGO to file its reply.The petitioner had contended that cola drinks were harmful for human consumption.The Ganguly committee had, early this month, filed an affidavit in the Supreme Court admitting that pesticide residues were found in cola drinks.