In a standard flowchart diagram, which specific geometric shape is strictly used to display either an input step or an output message?

Name: CREST Olympiads
Address: Office No. 234, Spaze iTech Park, Tower-B2, 2nd Floor, Sohna - Gurgaon Rd, Sector 49, Gurgaon, 122018, IN
Telephone: +91-98182-94134

Answer as guest — Start Free Practice Test to earn Practice PointsHow to earn pointsAsk a question+3Answer a question+1Someone answers yours+1Your Q gets upvoted+1Pioneer bonus (first 5)+5, ask questions & climb the leaderboard!

A Rectangle
B Oval
C Parallelogram
D Diamond