Ahmed said there was no division in the party on the issue. "We all are with Mamata Banerjee," he said.
Party MP Kunal Ghosh, a close aide of TMC supremo spoke on the same lines. "To be in the government or not hardly matters to TMC. Our fight is to protect the interest of the people of the country. All options are open," he said.
Stating that TMC parliamentary party would meet tomorrow (Tuesday) to take a decision, he said, "We have made our position clear.
We will not support the series of anti-people decisions. We want rollback."
Asked whether there was a possibility of Prime Minister Manmohan Singh speaking to the Trinamool supremo, he replied, "We have heard about it, but there is no information."
The Trinamool Congress has one cabinet minister, Mukul Roy and five ministers of state, Sudip Bandyopadhyay, Sougata Roy, Sultan Ahmed, Sisir Adhikary and C M Jatua in the Union council of ministers.
The party is the second largest constituent of the UPA with 19 members in the Lok Sabha.