Data Sufficiency

At the beginning of \(1990,\) Jon and Krista each purchased a certificate of deposit that paid the same rate of interest, and each held the certificate of deposit through the end of \(1990.\) If Jon invested \(x\) dollars and Krista invested \(\$10,000,\) and if Jon earned interest in \(1990\) totalling \(\$1200,\) what was the amount of interest that Krista earned on her \(\$10,000\) investment?

1) The rate of interest on the certificate of deposit that Jon and Krista each purchased was \(6\) percent

2) In \(1990,\) Jon invested \(\$20,000\) in the certificate of deposit

The OA is D