Read the paragraph below and answer the questions that follow.
(1) People who are interested in developing an artistic talent can now use their smart phones or computer tablets to tap into their creative potential. (2) For example, a budding artist can download sketchbook apps that turn a mobile device's screen into a canvas for sketching, drawing, or painting with either fingers or a stylus. (3) A musician who wants to practice or learn to play can get apps that turn a phone or tablet into a virtual piano, guitar, flute, or other instrument. (4) A poet will find apps that help with discovering ideas, finding the right words and rhymes, and composing stanzas. (5) A dancer can turn a mobile device into a tool for learning new steps or moves.
Select the number of the sentence containing a transitional expression that introduces an illustration.

A) Sentence 1
B) Sentence 2
C) Sentence 3