The 19th of September 1987 was a Saturday. If 1988 was a leap-year, what day of the week was the 23rd of September 1990? Choose the correct choice from the following answers:	A) Sunday	B) Monday	C) Wednesday	D) Thursday	E) Friday
19th September   1987: Saturday   1988: Monday (due to leap year)   1989: Tuesday   1990: Wednesday   Hence 23rd September was a Sunday.   The answer is Sunday.
<result>A</result>
The 19th of September 1987 was a Saturday. If 1988 was a leap-year, what day of the week was the 23rd of September 1990?