Chapter 3, Problem 7RA

Which of these statements about RNA is true?

$\begin{array}{l}\text{a}\text{. It is made in the nucleus}\text{.}\hfill \\ \text{b}\text{. It is double-stranded}\text{.}\hfill \\ \text{c}\text{. It contains the sugar deoxyribose}\text{.}\hfill \\ \text{d}\text{. It is a complementary copy of the entire DNA molecule}\text{.}\hfill \end{array}$