Which of the following options is the best substitute for the underlined words in statement III?

Directions: This passage contains errors and an omission. Choose the correct option to complete the passage.
Statement I: Samsung’s has displaced Nokia to become the world’s top mobile brand for the year 2012.
Statement II: This is the one time in 14 years that Nokia is not on top of the global cell-phone business on an annual basis.
Statement III: The market for smart-phones is going to keep growing and this probably explains the rise of Samsung.
Statement IV: Samsung’s Android powered phones are now ____________.