8:If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k?

(1) The tens digit of k + 9 is 3.

(2) The tens digit of k + 4 is 2.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

someone can help me with this.thanks

A
(1) The tens digit of k + 9 is 3.，应理解为The tens digit of （k + 9） is 3，而不是（The tens digit of k）+9is 3。

由条件（1）可知k+9后个位必然进一，所以之前十位应是2。

（2）理解同上，k+4有可能进位，也有可能没进位，因而无法确定