Read this: New Delhi is governed through a municipal government, known as the New Delhi Municipal Council (NDMC). Other urban areas of the metropolis of Delhi are administered by the Municipal Corporation of Delhi (MCD). However, the entire metropolis of Delhi is commonly known as New Delhi in contrast to Old Delhi.

What is the name commonly used to refer to the entire metropolis of Delhi?
What is the answer? (If it cannot be answered, return "unanswerable")
New Delhi