Choose the most effective revision for the underlined part of the sentence. If no revision is necessary, choose "Leave it as is." Deon worked all day building his sand castle, yet I was conscious that the tide would eventually raise and wash away his hard work

A. Leave it as is.
B. Deon worked all day building his sand castle, yet I was conscious that the tide would eventually rise and wash away his hard work
C. Deon worked all day building his sand castle, yet, I was conscious that the tide would eventually rise and wash away his hard work
D. Deon worked all day building his sand castle, yet I was conscience that the tide would eventually rise and wash away his hard work