Final answer:
From 1 January 2017, new EP applicants will need to earn at least $3,500 per month (option C), which varies based on qualifications and experience.
Step-by-step explanation:
From 1 January 2017, new EP (Employment Pass) applicants in Singapore will have to earn a fixed monthly salary of $3,500 (option C) or more, depending on their qualifications and experience.
This figure is based on the criteria set by the Ministry of Manpower in Singapore for foreign professionals working in the country. It's important to note that the salary threshold for an Employment Pass can be updated and may change over time, so it's always best to check the latest information from the official sources.