During the taxation year, Sherry earned $10,000 in wages and received $1,500 in tips from her part-time job as a waitress. From the RESP that her grandfather had established for her, she received $6,000 in investment income and $1,000 in capital. She withdrew $5,000 from her RRSP. She also received $3,000 in EI payments. What is Sherry's taxable income?

a) $15,000

b) $21,000

c) $22,500

d) $25,500