Furis Corporation's Cash and Cash Equivalents Consist of Cash and Marketable

Furis Corporation's cash and cash equivalents consist of cash and marketable securities. Last year the company's cash account decreased by $12,000 and its marketable securities account increased by $19,000. Net cash provided by (used in) operating activities was $18,000. Net cash provided by (used in) financing activities was $(12,000) . Based on this information, the net cash provided by (used in) investing activities on the statement of cash flows was:

A) $(12,000)
B) $1,000
C) $(6,000)
D) $6,000