The following are 3 data analytics scenarios you are working on:

1. Model the relationship between fresh graduates education level (Bachelor, Master,PhD, Others) and their starting salaries.
2. Conduct a sentiment analysis of customer reviews(text data) for an E-commerce platform.
3. Understand if the income level (in $) is positively correlated to a clients saving amount (in $)in the bank.

Identify all the appropriate scenarios which require Feature Engineering.

1. I only.
2. I & II.
3. II & III.
4. I, II & III.