An air-track glider attached to a spring oscillates between the 50 cm mark and the 62 cm mark. It completes seven oscillations in 10 s. What is the maximum speed of the glider as it oscillates?

• A. $10\text{ cm/s}$
• B. $14\text{ cm/s}$
• C. $17\text{ cm/s}$
• D. $32\text{ cm/s}$
• E. $42\text{ cm/s}$
• F. $26\text{ cm/s}$