The Outstanding Stock of Riccardo Corporation Is Owned as Follows

The outstanding stock of Riccardo Corporation is owned as follows: $\begin{array} { l l } \text { Robert } & \text { 100 shares } \\\text {Megan (Robert's daughter) } & 100 \text { shares } \\\text { Kyle (Robert's cousin) } & 100 \text { shares } \\\text { RMD, Inc. } &\underline{ \text { 100 shares }} \\\text { Total shares autstanding } & \text { 400 shares }\end{array}$


Robert owns 50% of RMD, Inc.stock.The rest of RMD, Inc.stock is owned by unrelated parties.Riccardo Corporation redeems 90 of Robert's shares of stock for $9,000 in the only redemption transaction this year.Robert's basis for his stock is $10 per share (100 shares @ $10 = $1,000) .Riccardo Corporation has $300,000 in E&P.What is Robert's total basis in his remaining 10 shares of stock after the redemption?

A) 0
B) $100
C) $900
D) $1,000