If 'k' is a digit number where units place is not equal to zero, find the tens place of k.

1. tens place of k+4 is 3
2. tens place of k+9 is 4

A) stmt 1 alone is sufficient
B) stmt 2 alone is sufficient
C) Both stmts together are sufficient, but neither stmt alone is sufficient
D) each stmt alone is sufficient
E) Both stmts together are not sufficient.