Which of the following statements are true?

Text $\frac{1}{O}$ is built upon binary $\frac{1}{O}$ to provide a level of abstraction for character encoding and decoding.

Text $\frac{1}{0}$ involves encoding and decoding.

Binary $\frac{1}{O}$ does not require conversions.

Binary $\frac{1}{O}$ is more efficient than text $\frac{1}{0},$ because binary $\frac{1}{0}$ does not require encoding and decoding.

Binary files are independent of the encoding scheme on the host machine and thus are portable