Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| City | Country | IATA | ICAO | Airport |
| --- | --- | --- | --- | --- |
| Seoul | South Korea | ICN | RKSI | Incheon International Airport |
| Seoul | South Korea | GMP | RKSS | Gimpo International Airport |
| Jeju | South Korea | CJU | RKPC | Jeju International Airport |
| Siem Reap | Cambodia | REP | VDSR | Siem Reap International Airport |
| Sapporo | Japan | CTS | RJCC | New Chitose Airport |
| Nagasaki | Japan | NGS | RJFU | Nagasaki Airport |
| Okinawa | Japan | OKA | ROAH | Naha Airport |
| Fuzhou | China | FOC | ZSFZ | Fuzhou Changle International Airport |
| Shanghai | China | PVG | ZSPD | Shanghai Pudong International Airport |
| Hong Kong | Hong Kong | HKG | VHHH | Hong Kong International Airport |
| Macao | Macau | MFM | VMMC | Macao International Airport |
| Guam | Guam | GUM | PGUM | Antonio B. Won Pat International Airport |
| Taipei | Taiwan | TPE | RCTP | Taoyuan International Airport |
| Bangkok | Thailand | BKK | VTBS | Suvarnabhumi Airport |
| Chiang Mai | Thailand | CNX | VTCC | Chiang Mai International Airport |
| Vientiane | Laos | VTE | VLVT | Wattay International Airport |
| Cebu | Philippines | CEB | RPVM | Mactan Cebu International Airport |
| Clark | Philippines | CRK | RPLC | Clark International Airport |
Question:
What is the ICAO when the IATA shows mfm?
Answer:
VMMC